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VulnerabilityPublished

CVE-2026-120234: ag-ui · Resource Consumption

Affects ag-uiSource CVE Database V5

0
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Public exploit available · CVSS 5.3 Medium.

Data as of 1 Nov 2026, 15:58 UTC

CVSS 4.0 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulDB)CVSS 4.05.3
CNA (VulDB)CVSS 3.14.3
CNA (VulDB)CVSS 3.04.3
CNA (VulDB)CVSS 2.04.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
ag-ui-protocolag-uiAffected
  • 0.0.1 – 0.0.58
58 affected builds
Fixed in–
GitHubag-ui-protocol/ag-uipkg:github/ag-ui-protocol/ag-uiOther threatsAffected
  • 0.0.1 – 0.0.58
  • <=0.0.58
58 affected builds
Fixed in–

CPE configurations (1)

  • cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A pull request containing a fix for this vulnerability is awaiting acceptance. Users should monitor the vendor's repository for the acceptance of the fix and apply it promptly once available. No other mitigation or workaround is documented.

Description

CVE-2026-120234 is a medium severity vulnerability in ag-ui-protocol's ag-ui component up to version 0.0.20. It affects the HTTP Transport component's e.text function, allowing remote attackers to cause resource consumption. Public exploit code is available, but a fix is pending acceptance of a pull request.

References

Community reviews

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