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CVE-2025-13927 is a high-severity denial-of-service vulnerability in the Jira Connect integration of GitLab Community Edition and Enterprise Edition. It affects all versions from 11.9 before 18.6.4, 18.7 before 18.7.2, and 18.8 before 18.8.2. The issue allows an unauthenticated attacker to send crafted requests containing malformed authentication data, causing GitLab to enter a denial-of-service condition. Available information indicates the flaw is triggered during handling of malformed authentication input in the Jira Connect integration, but specific vulnerable functions are not currently available.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown
A high-severity denial-of-service (DoS) vulnerability in GitLab exploitable via crafted requests (exact mechanism not fully specified in the content).
A GitLab CE/EE denial-of-service vulnerability allowing unauthenticated DoS via crafted requests with malformed authentication data.
A high-severity denial-of-service vulnerability in GitLab’s Jira Connect integration that allows unauthenticated service disruption via malformed authentication requests.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.