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CVE Record

CVE-2020-13349: An issue has been discovered in GitLab EE affecting all versions starting from 8.12.

An issue has been discovered in GitLab EE affecting all versions starting from 8.12. A regular expression related to a file path resulted in the Advanced Search feature susceptible to catastrophic backtracking. Affected versions are >=8.12, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.

MediumCVSS 4.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

GitLab EE had a weakness in Advanced Search where a file path regular expression could consume excessive processing time. This can degrade availability, but the CVSS data shows no confidentiality or integrity impact and requires an authenticated user.

Executive priority

Treat this as a moderate availability risk. It is not described as data theft or privilege escalation, but affected GitLab EE instances should be upgraded through normal vulnerability management because source-control availability can disrupt engineering operations.

Technical view

CVE-2020-13349 is catastrophic backtracking in a file-path regular expression used by GitLab EE Advanced Search. Affected ranges are >=8.12 to <13.3.9, 13.4 to <13.4.5, and 13.5 to <13.5.2. CVSS 3.1 is 4.3, with network access, low complexity, and low availability impact.

Likely exposure

Exposure is most likely for organizations running self-managed GitLab EE in the affected version ranges, especially where authenticated users can access Advanced Search. The source bundle does not identify other GitLab products as affected.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. The issue is still relevant because any authenticated user with network access could potentially trigger availability degradation in affected GitLab EE deployments.

Researcher notes

No CWE is listed in the provided record. The key technical condition is regex catastrophic backtracking tied to file path handling in Advanced Search. Avoid assuming exploit activity or broader product impact without additional vendor evidence.

Mitigation direction

  • Upgrade GitLab EE outside the affected version ranges listed by GitLab.
  • Prioritize 13.3.9, 13.4.5, 13.5.2, or later supported releases.
  • Review GitLab vendor guidance before applying compensating controls.
  • Limit Advanced Search access where practical until remediation is complete.

Validation and detection

  • Inventory GitLab EE instances and record exact version numbers.
  • Confirm whether Advanced Search is enabled and reachable by authenticated users.
  • Compare deployed versions against the affected ranges in the CVE record.
  • Review monitoring for unusual authenticated Advanced Search resource spikes or errors.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2020-13349 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
4.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2020-13349Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
GitLabGitLab EE>=8.12, <13.3.9, >=13.4, <13.4.5, >=13.5, <13.5.2Listed
Weakness

CWE details

No CWE listed

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