HighVulnerabilityLLM-specific

CVE-2026-96893: GitLab EE prompt injection into AI agent instructions via conversation context

Source: NVD(opens in a new tab)
Identifier: CVE-2026-96893
Published: October 12, 2026
Record updated: October 13, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.

Summary

GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2. Under certain conditions, an authenticated user could inject specially crafted content into AI agent instructions, potentially causing unintended command execution attributed to other users. The cause is improper neutralization of special elements in AI conversation context construction.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 7.3(high)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Attack vector: network
Attack complexity: low
Privileges required: low
User interaction: required
EPSS: Not scored. FIRST had not published an EPSS score for this CVE when it was last checked on October 13, 2026.
Disclosure date: October 12, 2026

Weaknesses and techniques

AI threat technique (MITRE ATLAS): AML.T0051

Classification

Attack type: Prompt injection
Attack sophistication: Moderate
AI component targeted: Agent
Impact: Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-96893

First tracked: October 13, 2026 at 02:07 AM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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