Denial of Service in GitLab CE/EE Jira Connect integration
CVE-2025-13927 is a high-severity denial-of-service vulnerability in GitLab Community Edition (CE) and Enterprise Edition (EE), specifically in the Jira Connect integration. GitLab states that an unauthenticated attacker can trigger the issue by sending crafted requests containing malformed authentication data. The flaw affects all versions from 11.9 before 18.6.4, 18.7 before 18.7.2, and 18.8 before 18.8.2. The available advisory material does not identify the exact vulnerable function, but the issue is tied to improper handling of malformed authentication input in the Jira Connect integration, resulting in service disruption rather than confidentiality or integrity impact.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
14 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.
The version that knows your environment.
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.