CVE-2026-79663

Ech0 before 4.7.3 Stored XSS via RSS feed tag names

Ech0 before 4.7.3 contains a stored cross-site scripting vulnerability in the public RSS feed where tag names and markdown content are rendered without HTML escaping. Attackers with admin privileges can inject malicious tag names or raw HTML in echo content that executes as JavaScript in RSS readers that render HTML-type summaries, affecting anonymous subscribers and other users.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Ech0 Lin-snow

Products

Ech0 Ech0

CVE-2026-79658

Ech0 before 5.0.1 Denial of Service via Accept-Language

Ech0 before 5.0.1 does not impose any size or shape limit on the Accept-Language header processed by its i18n middleware, which runs on every HTTP request. The header is passed unfiltered to go-i18n's NewLocalizer, which internally calls golang.org/x/text/language.ParseAcceptLanguage. The CVE-2022-32149 mitigation in x/text caps '-' characters but not '_' characters, which the parser aliases to '-', allowing quadratic-time parsing to be triggered with a large header (up to Go's default 1 MiB) built from underscore separators. An unauthenticated attacker can send such requests to consume roughly 1.5 seconds of CPU each, and concurrent requests can saturate a multi-core server (denial of service).

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Ech0 Lin-snow

Products

Ech0 Ech0

CVE-2026-78681

NLTK before 3.10.3 Entity Expansion DoS via ElementTree

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Nltk

Products

Nltk

CVE-2026-78203

Ghostwriter before 7.1.2 Cross-Client Report Template Disclosure via Unauthorized Template Swap

Ghostwriter before 7.1.2 fails to validate template ownership in the report template swap endpoint, allowing attackers to attach client-scoped templates from other clients to their own reports. Attackers can exploit sequential template primary keys to enumerate and attach foreign templates, then generate reports to disclose template contents including letterhead, boilerplate, and methodology text.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Ghostmanager

Products

Ghostwriter

CVE-2026-77088

justhtml 0.9.0 through 1.21.0 Cross-Site Scripting via code-span

justhtml versions 0.9.0 through 1.21.0 contain a cross-site scripting vulnerability in to_markdown() where inline code spans fail to account for blank lines as block boundaries. Attackers can inject blank lines into code or pre element text to break the inline span, causing sanitized HTML to be emitted unescaped and re-parsed as live Markdown by compliant renderers.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Emilstenstrom

Products

Justhtml

CVE-2026-76847

act 0.2.81 through 0.2.89 Missing Authorization in the Artifacts V4 Backend

act starts an HTTP Artifacts V4 backend whenever a workflow uses actions/upload-artifact@v4 or actions/download-artifact@v4. The control-plane RPCs of that backend, including CreateArtifact, GetSignedArtifactURL, ListArtifacts, FinalizeArtifact and DeleteArtifact, accept a caller-supplied workflow_run_backend_id and never check that it belongs to the requester: validateRunIDV4 in pkg/artifacts/artifacts_v4.go parses the value and returns it with the comparison against the requesting task's run ID left commented out. The signed URLs the backend issues are authenticated by an HMAC whose key is hardcoded to the four bytes 0xba 0xdb 0xee 0xf0, identical in every build, computed over a concatenation of endpoint, expiry, artifact name and task ID with no length prefix or delimiter, so signatures are both forgeable and ambiguous between differing artifact name and task ID pairs. The --artifact-server-addr flag defaults to the host's outbound address rather than loopback, leaving the backend reachable from the surrounding network. Any client that can reach it may read, overwrite or delete the artifacts of a concurrently running job with no credentials, exposing build outputs such as secrets and deployment credentials and permitting their replacement before the owning job consumes them.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Nektos

Products

Act

CVE-2026-76073

Label Studio through 1.23.0 Cross-Organization Annotation Access via Unscoped AnnotationAPI Queryset

Label Studio does not scope the annotation detail endpoint to the requesting user's organization. AnnotationAPI in label_studio/tasks/api.py declares queryset = Annotation.objects.all() and provides no get_queryset override, so the default lookup retrieves any annotation by primary key. The view's permission_required entries name annotations.view, annotations.change and annotations.delete, and label_studio/core/permissions.py registers every permission with rules.is_authenticated, so the check is satisfied by any logged-in account and no object-level organization test runs. The sibling task endpoint does constrain its queryset with project__organization set to the requester's active organization, which is the boundary this path omits. Annotation identifiers are sequential integers, so an authenticated user of one organization can enumerate identifiers to read, modify and delete annotations belonging to other organizations on the same instance. The same unscoped queryset appears on AnnotationConvertAPI in the same file.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Humansignal

Products

Label Studio

CVE-2026-72698

Grav CMS before 2.0.16 Information Disclosure via Twig Sandbox Bypass

Grav CMS before 2.0.16 fails to filter system, site, and theme configuration arrays in sandboxed Twig renders, allowing content editors to read sensitive configuration values. Attackers with page-content edit access can access raw configuration arrays including secrets like cache credentials by using dot notation in Twig templates, bypassing the config_denied_paths restrictions.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Getgrav

Products

Grav

CVE-2026-71943

DrayTek VigorSwitch Multiple Models OS Command Injection via setDevNet

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the setDevNet function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

CVSS 4.0 · 8.6 High EPSS 2.3% KEV · Not listed

Vendors

Draytek

Products

Vigorswitch Fx2120 Firmware Vigorswitch G1282 Firmware Vigorswitch G2100 Firmware and 11 more

CVE-2026-71938

DrayTek VigorSwitch Multiple Models Buffer Overflow via switch_lan_gvrp

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the switch_lan_gvrp function. The vulnerability is caused by unsafe copying of the portList field into an undersized buffer. A remote attacker can trigger this vulnerability via crafted input, causing a denial of service or potentially executing arbitrary commands. Exploitation requires valid administrative credentials for the device's web management interface.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

Vendors

Draytek

Products

Vigorswitch Fx2120 Firmware Vigorswitch G1282 Firmware Vigorswitch G2100 Firmware and 11 more

CVE-2026-71933

DrayTek VigorSwitch Multiple Models Missing Authorization in Syslog Functions

Multiple DrayTek VigorSwitch models contain unauthorized operation vulnerabilities in multiple syslog functions. The vulnerability is caused by missing authorization checks. A remote attacker can trigger these vulnerabilities via crafted requests to modify configuration, restart services, save startup configuration, or clear logs.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Draytek

Products

Vigorswitch Fx2120 Firmware Vigorswitch G1282 Firmware Vigorswitch G2100 Firmware and 11 more

CVE-2026-71928

DrayTek VigorSwitch Multiple Models OS Command Injection via fdftDevice

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the fdftDevice function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

CVSS 4.0 · 8.6 High EPSS 2.3% KEV · Not listed

Vendors

Draytek

Products

Vigorswitch Fx2120 Firmware Vigorswitch G1282 Firmware Vigorswitch G2100 Firmware and 11 more

CVE-2026-71923

DrayTek VigorSwitch Multiple Models OS Command Injection via auth_set

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the auth_set function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

CVSS 4.0 · 8.6 High EPSS 2.3% KEV · Not listed

Vendors

Draytek

Products

Vigorswitch Fx2120 Firmware Vigorswitch G1282 Firmware Vigorswitch G2100 Firmware and 11 more

CVE-2026-71918

DrayTek VigorSwitch Multiple Models OS Command Injection via webBackupAction

Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the webBackupAction function. The vulnerability is caused by insufficient filtering of the option, key, pw_encode, pathN, and valueN fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

CVSS 4.0 · 8.6 High EPSS 2.3% KEV · Not listed

Vendors

Draytek

Products

Vigorswitch Fx2120 Firmware Vigorswitch G1282 Firmware Vigorswitch G2100 Firmware and 11 more

CVE-2026-71913

DrayTek VigorAP Multiple Models OS Command Injection via upload_settings.cgi

Multiple DrayTek VigorAP models contain a command injection vulnerability in the upload_settings.cgi interface. The vulnerability is caused by insufficient filtering before the restorekey field is concatenated into a shell command. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

CVSS 4.0 · 8.6 High EPSS 1.8% KEV · Not listed

Vendors

Draytek

Products

Vigorap 1060c Vigorap 1060c Firmware Vigorap 903 and 9 more

CVE-2026-71908

DrayTek VigorAP Multiple Models OS Command Injection via mesh_start_speed_test

Multiple DrayTek VigorAP models contain a command injection vulnerability in the mesh_start_speed_test function. The vulnerability is caused by insufficient sanitization of the meshdevice_index and meshdevice_ip fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.

CVSS 4.0 · 8.6 High EPSS 2.3% KEV · Not listed

Vendors

Draytek

Products

Vigorap 1060c Vigorap 1060c Firmware Vigorap 903 and 9 more

CVE-2026-68767

hashcat through 7.1.2 Off-by-One Out-of-Bounds Heap Write in fgetl()

hashcat's fgetl() function in src/filehandling.c writes a null terminator one byte past the caller's buffer when an input line is exactly the buffer length. Attackers can trigger this out-of-bounds heap write by providing a hash file, potfile, or wordlist containing a line of exactly HCBUFSIZ_LARGE bytes.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Hashcat

Products

Hashcat

CVE-2026-5388

justhtml before 1.15.0 Multiple Security Issues

justhtml before 1.15.0 contains multiple security issues in URL sanitization helpers (clean_url_value/clean_url_in_js_string), HTML serialization, Markdown passthrough (html_passthrough=True), and several custom sanitization-policy edge cases. Depending on configuration, an attacker can bypass sanitization to inject active HTML and JavaScript — for example via encoded javascript: URLs, backslash-based relative URLs resolved as remote hosts, markup-breaking programmatic element/attribute names or HTML comments, raw </textarea> reintroduction through Markdown passthrough, or preserved <style>/<meta http-equiv=refresh>/<base href> tags in custom policies. Most custom-policy issues do not affect the default sanitize=True configuration; they primarily affect helper APIs, programmatic DOM construction, html_passthrough=True, and custom policies/transform pipelines.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

Vendors

Emilstenstrom

Products

Justhtml

CVE-2026-59809

SiYuan before v3.8.0 Secret Exfiltration via http_request URL

SiYuan before v3.8.0 interpolates secret placeholders into the destination URL parameter of the http_request MCP tool, allowing attackers to exfiltrate stored secrets. An MCP client can craft a request with an attacker-controlled URL containing secret placeholders to send plaintext secret values to any public host without confirmation.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

B3log Siyuan

Products

Siyuan Siyuan

CVE-2026-58001

WWBN AVideo Cross-Site Request Forgery via videoEditLight.php

WWBN AVideo through commit 9c39d8c8 contains a cross-site request forgery vulnerability in objects/videoEditLight.php that lacks request authenticity checks and accepts GET requests. Attackers can store an img tag in a video description that transfers video ownership to an attacker-controlled account when an administrator views the video page.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Wwbn

Products

Avideo