PT-2026-35503 · Note Mark · Note Mark

Adrgs · Published 2026-04-25 · Updated 2026-05-23 · CVE-2026-41571

Positive Technologies (AI Summary)

CVSS v3.1

9.4

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Name of the Vulnerable Software and Affected Versions Note Mark versions prior to 0.19.3

Description An authentication bypass exists in the internal login endpoint. The IsPasswordMatch() function in backend/db/models.go uses a hard-coded bcrypt("null") placeholder when a user has no stored password. Since OIDC-registered users are created without a password, an unauthenticated attacker can obtain a valid session by submitting "null" in the password variable.

Recommendations Update to version 0.19.3.

Exploit

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2026-41571

GHSA-PXF8-6WQM-R6HH

Affected Products

Note Mark

References · 16

• 🔥 https://github.com/enchant97/note-mark/security/advisories/GHSA-pxf8-6wqm-r6hh · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-41571 · Security Note
• https://osv.dev/vulnerability/GHSA-pxf8-6wqm-r6hh · Vendor Advisory
• https://github.com/enchant97/note-mark/commit/dea5530cc9891187b51548ef9f2868b7dc9f4e92 · Note
• https://github.com/enchant97/note-mark · Note
• https://github.com/enchant97/note-mark/releases/tag/v0.19.3 · Note
• https://twitter.com/lyrie_ai/status/2058141224444317780 · Twitter Post
• https://twitter.com/lyrie_ai/status/2054337566162219280 · Twitter Post
• https://reddit.com/r/VulnMatter/comments/1sy0a2l/resumen_diario_de_vulnerabilidades_28042026 · Reddit Post
• https://reddit.com/r/VulnMatter/comments/1sx7q7j/resumen_diario_de_vulnerabilidades_27042026 · Reddit Post
• https://twitter.com/CVEnew/status/2051361252857753694 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2051403653534097416 · Twitter Post
• https://twitter.com/lyrie_ai/status/2054337566984257674 · Twitter Post
• https://twitter.com/lyrie_ai/status/2058141226537263446 · Twitter Post
• https://twitter.com/lyrie_ai/status/2058141225555726515 · Twitter Post