VulnSocial

CVE-2023-5356Active Exploitation(gitlab / gitlab)

LOWCVSS 8.8 · HIGH

Exploitation ongoing with high activity in latest observed window (1 mentions)

Immediate actions

  • Prioritize remediation for gitlab gitlab systems immediately
  • Assume compromise if assets are exposed
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

Incorrect authorization checks in GitLab CE/EE from all versions starting from 8.13 before 16.5.6, all versions starting from 16.6 before 16.6.4, all versions starting from 16.7 before 16.7.2, allows a user to abuse slack/mattermost integrations to execute slash commands as another user.

gitlab CVEsBack to dashboard
3.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-863

Priority

LOW

Exploitation

ACTIVE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • gitlab

Threat summary

  • Active exploitation appears in 1 classified signals
  • 1 mentions across 1 observed day

What's happening

  • Active exploitation reported across 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
gitlab
Products
gitlab

2 versions affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-21: 1Active Exploitation · 2026-08-21: 1Technical Details · 2026-08-21: 108-21
Signal classification1 categories
Active Exploitation
1100.0%
Referenced assets1 URL
Full discourse1 post
  • nksistemas@nksistemas
    Active Exploitation

    Vulnerabilidad Crítica de Inyección de Código en GitLab (CVE-2023-5356): RCE Activamente Explotada https://nksistemas.com/vulnerabilidad-critica-de-inyeccion-de-codigo-en-gitlab-cve-2023-5356-rce-activamente-explotada/

    Post summary

    The article announces that GitLab CVE-2023-5356, a critical code injection vulnerability leading to remote code execution, is being actively exploited, but offers no details on patches, PoCs, or technical mitigation.

    11012230
    6.2K followersView on X
CPE platform detail6 entries

6 of 6 entries

PartVendorProductVersionTarget SWTarget HW
Appgitlabgitlab---
Appgitlabgitlab---
Appgitlabgitlab16.7.0--
Appgitlabgitlab16.7.0--
Appgitlabgitlab16.7.1--
Appgitlabgitlab16.7.1--

Explore more

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