An issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19.0 before 19.0.10, 19.1 before 19.1.9, 19.2 before 19.2.9, 19.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server due to integer overflow when compiling a specially crafted regular expression.
CVE-2026-110264
“—” beside the score: it is equal to the CVSS score beside it.
Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-22. A secondary CVSS source baseline 10.0; sources differ by 0.0.
Also known asEUVD-2026-107696 (ENISA EUVD) · GHSA-83vq-rvff-66gw (GitHub Security Advisories)Source: ENISA EUVD
- Public exploit or proof-of-concept code is available
A fix is available — apply it.
Fixed versions, as the CVE record's CNA (GitLab Inc.) states them: "Upgrade to versions 18.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, 19.5.1, or later."
- CVSS v3
- 10.0
- EG Score
- 10.0CRITICALhigh confidence
- EG Risk
- 76EG Risk 76/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity100% × 45%Impact severity (EG Severity): CVSS 10.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 1.3%
- EPSS %ILE
- 71st
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (10.0): severity, escalated by confirmed exploitation. This CVE's 10.0 is its impact severity (EG Severity), not escalated.
- EG Severity
- 10.0 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 1.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
October 22, 2026
Last Modified
October 31, 2026
Advisory Details (3)
Auto-updated Oct 31, 2026Regexp compilation fixes related to GitLab's CVE-2026-89078, CVE-2026-93577, CVE-2026-97229 and CVE-2026-110264 | Ruby
https://www.ruby-lang.org/en/news/2026/10/23/regexp-fixes-for-gitlab-cves/Work items · GitLab.org / GitLab · GitLab
https://gitlab.com/gitlab-org/gitlab/-/work_items/633633GitLab Critical Patch Release: 19.5.1, 19.4.3, 19.3.6, 19.2.9, 19.1.9, 19.0.10, 18.11.13 | GitLab Docs
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/Vendor Advisories for CVE-2026-110264(6)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- CVE-2026-110264Microsoft Security Response Center (MSRC)Critical
Integer Overflow or Wraparound in GitLab
- RHSA-2026:88880Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- RHSA-2026:88865Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- RHSA-2026:88861Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- GHSA-83vq-rvff-66gwGitHub Security AdvisoriesCritical
An issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19...
- patch-release-gitlab-19-5-1-releasedGitLab Security
GitLab Critical Patch Release: 19.5.1, 19.4.3, 19.3.6, 19.2.9, 19.1.9, 19.0.10, 18.11.13
Patch Availability(3)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | ruby3-3-main-3.3.13-23.8.hum1 | 2026-10-24 | redhat |
| redhat | ruby4-0-main-4.0.9-41.hum1 | 2026-10-24 | redhat |
| redhat | ruby3-4-main-3.4.12-33.1.hum1 | 2026-10-23 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 35× in last 7d / 58× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-11-01 22:58 UTCEG score recompute
- 2026-11-01 22:58 UTCVendor advisory
- 2026-11-01 22:58 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-31 23:42 UTCEG score recompute
- 2026-10-31 23:42 UTCVendor advisory
- 2026-10-31 23:42 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-31 16:31 UTCEPSS rescoreEPSS 1.3% · 71st percentile
- 2026-10-31 00:27 UTCEG score recompute
- 2026-10-31 00:27 UTCVendor advisory
- 2026-10-31 00:26 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-30 23:29 UTCEG score recompute
- 2026-10-30 23:29 UTCVendor advisory
- 2026-10-30 23:29 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-30 17:27 UTCEG score recompute
- 2026-10-30 17:27 UTCVendor advisory
- 2026-10-30 17:27 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-30 16:33 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-30 16:25 UTCVendor advisory
- 2026-10-30 16:25 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-30 12:35 UTCEG score recompute
- 2026-10-30 12:35 UTCVendor advisory
- 2026-10-30 12:35 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-29 16:32 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-29 13:17 UTCEG score recompute
- 2026-10-29 13:17 UTCVendor advisory
Show 33 moreShow fewer
- 2026-10-29 13:17 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-28 16:31 UTCEPSS rescoreEPSS 1.0% · 63rd percentile
- 2026-10-28 14:00 UTCEG score recompute
- 2026-10-28 14:00 UTCVendor advisory
- 2026-10-28 14:00 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
- 2026-10-27 14:28 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-27 00:38 UTCEG score recompute
- 2026-10-27 00:37 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-26 16:30 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
- 2026-10-25 21:43 UTCEG score recompute
- 2026-10-25 21:43 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 1.0% · 62nd percentile
- 2026-10-25 14:52 UTCEG score recompute
- 2026-10-24 22:13 UTCEG score recompute
- 2026-10-24 22:13 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-23 22:57 UTCEG score recompute
- 2026-10-23 22:57 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-22 23:28 UTCEG score recompute
- 2026-10-22 23:28 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-22 23:11 UTCEG score recompute
- 2026-10-22 23:11 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-22 16:26 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-22 13:28 UTCEG score recompute
- 2026-10-22 13:28 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-22 12:56 UTCEG score recompute
- 2026-10-22 12:56 UTCGHSA enrichmentGHSA-83vq-rvff-66gw · GitHub severity CRITICAL · GitHub CVSS 10.0
- 2026-10-22 01:27 UTCEG score recompute
- 2026-10-22 00:52 UTCEG score recomputeFirst assessed: 10.0 CRITICAL
- 2026-10-22 00:50 UTCMITRE cvelistV5first tracked
Publicly available exploits
(1 reference)Public exploit code is referenced for this CVE (1 GitHub PoC). Defenders should treat patch urgency accordingly.
- GitHub PoCal4n4n/CVE-2026-110264Published Oct 22, 2026
CVE-2026-110264: GitLab pre-auth RCE via Onigmo integer overflow in org-ruby. Docker-based validation, admin check script, attack surface analysis.
Open source ↗
Related CVEs(same vendor + same CWE)
Same vendor
3 shownredhat:RHSA-2026:88861
Frequently asked(5)
What is CVE-2026-110264?
When was the CVE record for CVE-2026-110264 published?
Is CVE-2026-110264 actively exploited?
What is the CVSS score of CVE-2026-110264?
How do I remediate CVE-2026-110264?
Dependency Blast Radius
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