CVE Explorer
CVE-2026-1456
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to cause denial of service through CPU exhaustion by submitting specially crafted markdown files that trigger exponential processing in markdown preview.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"cpes":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","product":"GitLab","repo":"git://git@gitlab.com:gitlab-org/gitlab.git","vendor":"GitLab","versions":[{"lessThan":"18.7.4","status":"affected","version":"18.7","versionType":"semver"},{"lessThan":"18.8.4","status":"affected","version":"18.8","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:941f5b4f53e0843701d56e4deae091ddebc945a761ddf221b289aa01575202e7 · sha256:4a0477d298ad4d45… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:941f5b4f53e0843701d56e4deae091ddebc945a761ddf221b289aa01575202e7 · sha256:4a0477d298ad4d45… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:941f5b4f53e0843701d56e4deae091ddebc945a761ddf221b289aa01575202e7 · sha256:4a0477d298ad4d45… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"url":"https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:941f5b4f53e0843701d56e4deae091ddebc945a761ddf221b289aa01575202e7 · sha256:4a0477d298ad4d45… · /containers/cna/references/2
{"name":"GitLab Issue #587688","tags":["issue-tracking","permissions-required"],"url":"https://gitlab.com/gitlab-org/gitlab/-/issues/587688"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:941f5b4f53e0843701d56e4deae091ddebc945a761ddf221b289aa01575202e7 · sha256:4a0477d298ad4d45… · /containers/cna/references/0
{"name":"HackerOne Bug Bounty Report #3517928","tags":["technical-description","exploit","permissions-required"],"url":"https://hackerone.com/reports/3517928"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:941f5b4f53e0843701d56e4deae091ddebc945a761ddf221b289aa01575202e7 · sha256:4a0477d298ad4d45… · /containers/cna/references/1
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.