CVE-2026-123569

Devalue before 5.6.3 Denial of Service via Sparse Array Serialization

The devalue package for npm before 5.6.3 can consume excessive CPU and memory when serializing sparse arrays with uneval or stringify. An attacker who manages to get a sparse array created on the server, which mainstream wire formats do not allow, and serialized there can cause a denial of service.

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

Vendors

Svelte

Products

Devalue

CVE-2026-123565

Devalue before 5.9.3 Quadratic Expansion Denial of Service via uneval

Sveltejs devalue before 5.9.3 contains a resource exhaustion vulnerability where repeated primitive strings cause quadratic expansion in the uneval function. Attackers can supply a small crafted payload that is parsed and then passed to uneval, producing a very large serialized string that exhausts memory or CPU.

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

Vendors

Svelte

Products

Devalue

CVE-2026-123561

Sveltejs devalue before 5.9.3 __proto__ Rejection Bypass via Property-Key Coercion

devalue before 5.9.3 allows malformed null-prototype object keys to bypass parse's __proto__ rejection through property-key coercion, an incomplete fix for GHSA-mwv9-gp5h-frr4. Attackers can supply crafted payloads that yield objects with a __proto__ own property, which alone does not cause prototype pollution.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Svelte

Products

Devalue

CVE-2026-123557

Zebra zebrad before 7.0.0 Reachable Assertion DoS via Peer Disconnection

ZcashFoundation Zebra zebrad before 7.0.0 contains a reachable assertion race condition that allows unauthenticated remote peers to abort the node by triggering disconnection during a blocked outbound send. Malicious peers can return empty FindBlocks or FindHeaders replies and stop reading their socket, dropping an unresolved MustUseClientResponseSender and terminating syncing nodes.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed

Vendors

Zcashfoundation Zfnd

Products

Zebra Zebra

CVE-2026-123533

Gitoxide before 0.42.0 Denial of Service via Crafted Commit-Graph File

gix-commitgraph before 0.42.0, as used in gitoxide before 0.61.0, contains a denial of service vulnerability because its commit-graph parser does not validate parent graph positions against the declared commit count or check the EDGE chunk length for 4-byte alignment. Attackers can supply a repository containing a crafted .git/objects/info/commit-graph file to trigger panics that abort gix merge-base, gix blame, and applications embedding gix.

CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed

Vendors

Gitoxidelabs

Products

Gitoxide

CVE-2026-123529

Vikunja before 2.7.1 Stored CSS Injection via TipTap Table Cell data-background-color

Vikunja before 2.7.1 contains a stored CSS injection vulnerability that allows authenticated users with project write access to inject arbitrary CSS via unsanitized table-cell data-background-color attributes. Attackers can store crafted task descriptions or comments to render full-viewport phishing overlays or force zero-click outbound background-image requests that deanonymize viewers.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed

Vendors

Vikunja

Products

Vikunja

CVE-2026-123525

Vikunja before 2.7.1 Memory Exhaustion DoS via Trello, Todoist and Microsoft To Do Migrations

Vikunja before 2.7.1 allocates memory without limits in its Trello, Todoist and Microsoft To Do migration importers, which buffer remote attachment downloads and API responses in memory without size caps. Authenticated users can start a migration that references huge attacker-served attachments or yields oversized API responses, exhausting memory and crashing the shared API process for all tenants.

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

Vendors

Vikunja

Products

Vikunja

CVE-2026-123521

Vikunja before 2.7.1 Password Brute-Force via TOTP Disable Endpoint

Vikunja before 2.7.1 contains an improper restriction of excessive authentication attempts vulnerability that allows session holders to brute-force account passwords via unthrottled re-authentication endpoints. Attackers with a stolen session can guess the password via /user/settings/totp/disable without lockout, then disable TOTP without a code for persistent account takeover.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed

Vendors

Vikunja

Products

Vikunja

CVE-2026-123517

Vikunja before 2.7.1 Information Disclosure via Team Self-Removal Endpoint

Vikunja before 2.7.1 contains an information disclosure vulnerability that allows authenticated users to determine whether private teams exist by calling the team member self-removal endpoint. Attackers can send DELETE requests to /teams/{id}/members/{own username} for arbitrary team ids and use the distinguishable responses to learn if a team exists, is SSO-managed, or has a single member.

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

Vendors

Vikunja

Products

Vikunja

CVE-2026-123513

Vikunja before 2.7.1 Auth Token Leak via API URL Change

Vikunja before 2.7.1 contains a credential exposure vulnerability that allows attackers to steal stored auth tokens by inducing users to switch the frontend API URL. Because checkAndSetApiUrl leaves origin-independent localStorage tokens in place, the bearer token and desktop OAuth refresh token are sent to the attacker's server, enabling account takeover.

CVSS 4.0 · 7.6 High EPSS < 1% KEV · Not listed

Vendors

Vikunja

Products

Vikunja

CVE-2026-123509

Vikunja before 2.7.1 Denial of Service via Unbounded Kanban Bucket Count

Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows project writers or view admins to create unlimited kanban buckets due to missing count caps. Attackers can create thousands of buckets so every kanban read runs a task SELECT and COUNT per bucket, generating heavy database load.

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

Vendors

Vikunja

Products

Vikunja

CVE-2026-123505

Vikunja before 2.7.1 World-Readable Local File Storage and SQLite Database

Vikunja before 2.7.1 contains an insecure file permissions vulnerability that allows local users to read stored data because localStorage.Write creates blobs world-readable. Local attackers on a shared host can read attachments, project backgrounds and exports, and copy the SQLite database to crack password hashes offline.

CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed

Vendors

Vikunja

Products

Vikunja

CVE-2026-123501

Vikunja before 2.7.1 Memory Exhaustion DoS via Unbounded Image Decodes

Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory through concurrent image decodes in avatar and background uploads. Attackers can send several parallel tiny, highly compressible PNGs decoded at up to 50 megapixels each, pushing the API process into memory pressure or an OOM kill.

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

Vendors

Vikunja

Products

Vikunja

CVE-2026-123497

Vikunja veans before 2.7.1 HTTPS to HTTP Downgrade in Server Discovery

Vikunja veans before 2.7.1 contains a protocol downgrade vulnerability in serverCandidates that allows on-path attackers to force plain HTTP during veans init and login. Attackers can block HTTPS ports so discovery accepts an unverified HTTP response, capturing passwords, TOTP codes or bot tokens and persisting cleartext API traffic.

CVSS 4.0 · 7.6 High EPSS < 1% KEV · Not listed

Vendors

Vikunja

Products

Vikunja

CVE-2026-123493

Vikunja from 2.4.0 before 2.7.1 Authentication Bypass via Bot API Tokens

Vikunja from 2.4.0 before 2.7.1 contains an authentication bypass vulnerability that allows disabled or locked users to retain access through API tokens owned by their bot users. Because token validation only checks the bot's own status, attackers holding pre-minted bot tokens can keep reading and modifying shared projects via the HTTP API, CalDAV, MCP and feeds.

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

Vendors

Go-vikunja Vikunja

Products

Vikunja Vikunja

CVE-2026-123322

Code Execution via Untrusted Angular CLI Schematics Loader in WebStorm

In JetBrains WebStorm before 2026.3, 2026.2.4 code execution was possible in untrusted projects via the Angular CLI schematics loader

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Jetbrains

Products

Webstorm

CVE-2026-123320

Insufficient Login Warning Enables Credential Leakage to Malicious Server in JetBrains Toolbox App

In JetBrains Toolbox App before 3.9 insufficient warning in the login dialog allowed connecting to a malicious server

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Jetbrains

Products

Toolbox

CVE-2026-123319

Missing Domain Attribute Validation Allows Cookie Injection in JetBrains Ktor

In JetBrains Ktor before 3.6.1 missing Domain attribute validation in client cookie storage allowed cookie injection

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed

Vendors

Jetbrains

Products

Ktor

CVE-2026-123318

Ktor CIO Engine HTTP Request Smuggling Vulnerability

In JetBrains Ktor before 3.6.1 hTTP request smuggling was possible in the CIO engine

CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Jetbrains

Products

Ktor

CVE-2026-123315

Command Execution via Allow Similar Commands Option in JetBrains Junie CLI

In JetBrains Junie CLI before 26.8.24 command execution was possible via the Allow Similar Commands option

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Jetbrains

Products

Junie