HTML injection in GitLab CE/EE test case titles
CVE-2026-0595 is an authenticated HTML injection vulnerability in GitLab Community Edition (CE) and Enterprise Edition (EE). It affects all versions from 13.9 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4. Under certain conditions, an authenticated user could inject HTML through test case titles, which could then be leveraged to add unauthorized email addresses to a victim user's account. The issue is described by GitLab as an HTML injection flaw in test case titles that can impact account integrity.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
GitLab HTML injection vulnerability in test case titles that could enable account modification (adding unauthorized email addresses).
HTML injection in test case titles that could allow an authenticated attacker to add unauthorized email addresses to user accounts under certain conditions.
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.