CVE-2026-105777
Insertion of Sensitive Information Into Sent Data in GitLab
Reported by gitlab · Published October 21, 2026
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.6.5 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, an unauthenticated user could have retrieved sensitive internal server credentials due to improper filtering of internal response headers.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| gitlab | gitlab | 19.5.1, 19.4.3, 19.3.6 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| GitLab | GitLab | 17.6.5, 19.4, 19.5 |
| GitLab | GitLab | 17.6.5, 19.4, 19.5 |
Timeline
- Oct 21, 2026 CVE Published
- Oct 22, 2026 EPSS Score (4 in total, the first dated here)
- Oct 22, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-105777
vulnetix vdb fixes CVE-2026-105777
Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-105777/fixes/registry"
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References
- HackerOne Bug Bounty Report #3657282 technical-descriptionexploitpermissions-required