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Mastodon security flaw linked to Doyensec and Anthropic collaboration

By PulseAugur Editorial · [1 sources] ·

A security vulnerability in Mastodon, CVE-2026-46349, with a CVSS score of 5.3, has been disclosed. The vulnerability, related to retracted boost reissuance, was reported by Doyensec in collaboration with Anthropic Research. This collaboration has led to speculation about undisclosed project affiliations, specifically Project Glasswing. AI

IMPACT Speculation around AI collaboration in a software vulnerability disclosure.

RANK_REASON Disclosure of a specific software vulnerability and its reporting attribution. [lever_c_demoted from research: ic=1 ai=0.4]

Read on Mastodon — fosstodon.org →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

COVERAGE [1]

  1. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    The attribution for Mastodon's CVE-2026-46349 (CVSS 5.3, retracted boost reissuance) is interestingly reported as: "This security issue has been reported by Doy

    The attribution for Mastodon's CVE-2026-46349 (CVSS 5.3, retracted boost reissuance) is interestingly reported as: "This security issue has been reported by Doyensec in collaboration with Claude and Anthropic Research" Is this how they say "Mythos" without revealing that Doyensec…

    LINKS github.com/…/GHSA-chgx-jx3p-rf73 w.on-t.work/…/may-2026-vulnerability

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