CVE-2026-53945

Ghost: Server-side request forgery via DNS rebinding in external request handling

Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, Ghost’s private-IP check for outbound HTTP requests could be bypassed via DNS rebinding, allowing an attacker to coerce the Ghost server into reaching hosts on internal networks through features that issue external fetches. This vulnerability is fixed in 6.21.1.

CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed

Vendors

Ghost

Products

Ghost

CVE-2026-52807

Gogs: DOM-based XSS via Milestone Name on New Issue Page

Gogs is an open source self-hosted Git service. Prior to 0.14.3, in new_form.tmpl, milestone names are rendered with Go's default auto-escaping ({{.Name}}), which converts < to &lt; etc. This prevents direct HTML injection. However, when the browser renders the DOM, the text content of the element contains the decoded original payload. Semantic UI 2.4.2's dropdown component has preserveHTML: true as the default setting. When a user selects a dropdown item, the internal set.text() method calls jQuery's .html() with the item's text content. This re-parses the decoded text as HTML, creating the injected element and triggering the JavaScript event handler. An attacker can store an HTML/JavaScript payload in a milestone name, and when any user opens the New Issue page and interacts with the milestone dropdown, the payload executes in their browser via Semantic UI's preserveHTML behavior. This vulnerability is fixed in 0.14.3.

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

Vendors

Gogs

Products

Gogs

CVE-2026-52808

Gogs: Write-level collaborators can mutate admin-only repository settings via API

Gogs is an open source self-hosted Git service. Prior to 0.14.3, three API endpoints — PATCH /api/v1/repos/:owner/:repo/issue-tracker, PATCH /api/v1/repos/:owner/:repo/wiki, and POST /api/v1/repos/:owner/:repo/mirror-sync — are gated by reqRepoWriter() rather than reqRepoAdmin(). The equivalent operations in the web UI sit behind reqRepoAdmin, which requires AccessMode >= AccessModeAdmin. A write-level collaborator (who has AccessMode == AccessModeWrite < AccessModeAdmin) can therefore call these API endpoints directly to disable the native issue tracker or wiki, inject attacker-controlled external tracker/wiki URLs that redirect all repository visitors, or trigger mirror sync — none of which they are authorized to do. This vulnerability is fixed in 0.14.3.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Gogs

Products

Gogs

CVE-2026-13208

Kubevirt: virt-handler-rhel9: kubevirt: virt-handler notify server trusts vmi identity from unauthenticated grpc request body

A flaw was found in KubeVirt's virt-handler domain notify server. The gRPC handlers for HandleDomainEvent and HandleK8SEvent derive the VMI identity (namespace/name) solely from the request body without validating it against the connection's origin. Each virt-launcher pod connects through a per-VMI pipe socket, but no identity tag is propagated from the pipe path to the server handlers. This allows a compromised virt-launcher process to send forged domain lifecycle events for any other VMI scheduled on the same node, causing virt-handler to erroneously update that VMI's state and disrupt its lifecycle management.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Kubevirt Redhat

Products

Kubevirt Container Native Virtualization Openshift Virtualization

CVE-2026-45757

Rocket.Chat: users.deactivateIdle` deactivates accounts without revoking existing login tokens

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12, Rocket.Chat allows users deactivated through users.deactivateIdle to keep using already-issued login tokens. A user that an administrator has marked inactive for idleness can still access authenticated REST endpoints with the old token. This vulnerability is fixed in 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12.

CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed

Vendors

Rocketchat

Products

Rocket.chat

CVE-2026-54067

SiYuan: Stored XSS to RCE via CSS-snippet <style> breakout in renderSnippet()

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, CSS snippet body containing </style> breaks out of its surrounding <style> tag when renderSnippet() interpolates it via insertAdjacentHTML. A payload like runs arbitrary JavaScript in the renderer. On Electron desktop builds the renderer runs with nodeIntegration:true, so require('child_process') is reachable from the injected handler and the XSS chains to host RCE. Snippets sync via the workspace repository, so an attacker with write access to any synced workspace plants the payload once and it fires on every device that pulls. The bug also bypasses the user's enabledCSS / enabledJS separation. A user who turned enabledJS off was making a deliberate call not to run untrusted JavaScript; the CSS path runs it anyway. This vulnerability is fixed in 3.7.0.

CVSS 3.1 · 9.9 Critical EPSS < 1% KEV · Not listed

Vendors

Siyuan

Products

Siyuan

CVE-2026-4602

jsrsasign: jsrsasign: Signature verification bypass via negative exponent handling

Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verification by calling modPow with a negative exponent.

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

Vendors

Kjur

Products

Jsrsasign

CVE-2026-4599

jsrsasign: jsrsasign: Private key recovery via incomplete comparison checks biasing DSA nonces

Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to Incomplete Comparison with Missing Factors via the getRandomBigIntegerZeroToMax and getRandomBigIntegerMinToMax functions in src/crypto-1.1.js; an attacker can recover the private key by exploiting the incorrect compareTo checks that accept out-of-range candidates and thus bias DSA nonces during signature generation.

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

Vendors

Kjur

Products

Jsrsasign

CVE-2026-4598

jsrsasign: jsrsasign: Denial of Service via infinite loop in bnModInverse function with crafted inputs

Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values (e.g., modInverse(0, m) or modInverse(-1, m)).

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

Vendors

Kjur

Products

Jsrsasign

CVE-2026-50189

Appsmith: RCE via Supervisord XML-RPC Admin Interface Exposed via /supervisor Caddy Route

Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 2.1, Appsmith's bundled supervisord exposes an XML-RPC interface on port 9001, reachable from outside the container via a Caddy reverse-proxy route at /supervisor/* on the public ingress. Combined with the APPSMITH_SUPERVISOR_PASSWORD exposed via GET /api/v1/admin/env, any authenticated administrator can send arbitrary XML-RPC calls to supervisord and execute OS commands inside the Docker container via twiddler.addProgramToGroup. This vulnerability is fixed in 2.1.

CVSS 4.0 · 8.9 High EPSS < 1% KEV · Not listed

Vendors

Appsmith

Products

Appsmith

CVE-2026-41566

Apache Kvrocks: Improper permission for the APPLYBATCH command

Improper Handling of Insufficient Permissions or Privileges vulnerability in Apache Kvrocks. This issue affects Apache Kvrocks: 2.8.0. Users are recommended to upgrade to version 2.16.0, which fixes the issue.

CVSS 4.0 · 9.4 Critical EPSS < 1% KEV · Not listed

Vendors

Apache

Products

Kvrocks

CVE-2026-55454

Appsmith: Caddy admin API exposed without authentication

Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 2.1, the bundled Caddy reverse-proxy's admin API — which has no authentication by default — is bound on 0.0.0.0:2019 inside the container. While this listener is not directly published to the host by docker-compose.yml, it is reachable from the Appsmith server process itself or a SSRF vulnerability. An authenticated low-privileged user can therefore drive the SSRF to issue POST /load (or any other admin-API call) against http://0.0.0.0:2019/, fully replacing the live Caddy configuration and taking over the reverse proxy. This vulnerability is fixed in 2.1.

CVSS 3.1 · 9.9 Critical EPSS < 1% KEV · Not listed

Vendors

Appsmith

Products

Appsmith

CVE-2026-52795

Gogs: Authorization Bypass in Watch API allows any user to monitor private repository activity

Gogs is an open source self-hosted Git service. In 0.14.3 and earlier, any authenticated user can watch a private repository they have no access to, because the access check in the Watch API handler is inverted. The code checks if repoCtx.ViewerCanRead() (returns 404 when the user CAN read) instead of if !repoCtx.ViewerCanRead() (return 404 when the user CANNOT read). Once watching, the attacker's dashboard activity feed shows commit messages, branch names, issue titles, and PR details from the private repository. If email notifications are enabled, the attacker also receives emails containing issue and comment content.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Gogs

Products

Gogs

CVE-2026-3437

Improper Restriction of Operations within the Bounds of a Memory Buffer in Portwell Engineering Toolkits

An improper restriction of operations within the bounds of a memory buffer vulnerability in Portwell Engineering Toolkits version 4.8.2 could allow a local authenticated attacker to read and write to arbitrary memory via the Portwell Engineering Toolkits driver. Successful exploitation of this vulnerability could result in escalation of privileges or cause a denial-of-service condition.

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

Vendors

Portwell

Products

Engineering Toolkits Portwell Engineering Toolkits

CVE-2026-52815

Gogs: Unauthenticated Organization Teams Information Disclosure via API

Gogs is an open source self-hosted Git service. Prior to 0.14.3, Gogs has an unauthenticated information disclosure vulnerability. The GET /api/v1/orgs/:orgname/teams endpoint at internal/route/api/v1/org_team.go:8 returns all teams for any organization without requiring authentication. The route group at internal/route/api/v1/api.go:380-385 lacks the reqToken() middleware, and the listTeams() handler performs no authentication check, exposing team IDs, names, descriptions, and permission levels to any unauthenticated caller. This vulnerability is fixed in 0.14.3.

CVSS 4.0 · 5.5 Medium EPSS 1.5% KEV · Not listed

Vendors

Gogs

Products

Gogs

CVE-2026-47733

Rocket.Chat: Missing URL protocol sanitization in ImageElement allows javascript: URLs in markdown images

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, the ImageElement component in packages/gazzodown renders user-controlled src values directly into <a href> and <img src> attributes without protocol sanitization. Unlike the analogous LinkSpan component — which uses sanitizeUrl to block javascript:, data:, and vbscript: protocols — ImageElement passes the raw URL through unchanged. An authenticated user can post a markdown image with a javascript: URL that, if clicked on an older browser, would execute arbitrary JavaScript in the viewer's session. This vulnerability is fixed in 8.5.0.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed

Vendors

Rocketchat

Products

Rocket.chat

CVE-2026-52810

Gogs: Write to readonly repositories using receive-pack + service=git-upload-pack confusion

Gogs is an open source self-hosted Git service. Prior to 0.14.3, Git smart HTTP authorizes POST …/git-receive-pack using the client-supplied service query string (so ?service=git-upload-pack is evaluated as read access) while routing still runs git receive-pack, allowing push where only read should be allowed. This vulnerability is fixed in 0.14.3.

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

Vendors

Gogs

Products

Gogs

CVE-2026-39955

Cacti has Pre-Authentication SQL Injection via unanchored FILTER_VALIDATE_REGEXP in graph_view.php

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have pre-authentication SQL Injection via unanchored FILTER_VALIDATE_REGEXP in graph_view.php. This issue has been fixed in version 1.2.31.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Cacti

Products

Cacti

CVE-2025-61028

virtuoso-opensource: Virtuoso-opensource: Denial of Service via crafted SQL statements

An issue in the time_t_to_dt component of openlink virtuoso-opensource v7.2.11 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Openlink

Products

Virtuoso-opensource

CVE-2026-53095

bpf: Fix abuse of kprobe_write_ctx via freplace

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix abuse of kprobe_write_ctx via freplace uprobe programs are allowed to modify struct pt_regs. Since the actual program type of uprobe is KPROBE, it can be abused to modify struct pt_regs via kprobe+freplace when the kprobe attaches to kernel functions. For example, SEC("?kprobe") int kprobe(struct pt_regs *regs) { return 0; } SEC("?freplace") int freplace_kprobe(struct pt_regs *regs) { regs->di = 0; return 0; } freplace_kprobe prog will attach to kprobe prog. kprobe prog will attach to a kernel function. Without this patch, when the kernel function runs, its first arg will always be set as 0 via the freplace_kprobe prog. To fix the abuse of kprobe_write_ctx=true via kprobe+freplace, disallow attaching freplace programs on kprobe programs with different kprobe_write_ctx values.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel