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TI-2026-83626 Aliases CVE-2026-120233GHSA-mm62-6q8x-jm5m

Information disclosure in ag-ui HttpAgent client

Priority HIGH 72CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure, Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200 and CWE-284.

Summary

The ag-ui-protocol ag-ui package up to 0.0.58 contains a flaw in the HttpAgent component of its TypeScript client (sdks/typescript/packages/client/src/agent/http.ts). A remote attacker can manipulate the component without authentication or user interaction, which results in information disclosure (CWE-200). A public exploit has been released.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

A security flaw has been discovered in ag-ui-protocol ag-ui up to 0.0.58. This affects an unknown function of the file sdks/typescript/packages/client/src/agent/http.ts of the component HttpAgent. Performing a manipulation results in information disclosure. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00414 35th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ag-ui-protocolag-ui0.0.1; 0.0.2; 0.0.3; 0.0.4; 0.0.5; 0.0.6; 0.0.7; 0.0.8; 0.0.9; 0.0.10; 0.0.11; 0.0.12; 0.0.13; 0.0.14; 0.0.15; 0.0.16; 0.0.17; 0.0.18; 0.0.19; 0.0.20; 0.0.21; 0.0.22; 0.0.23; 0.0.24; 0.0.25; 0.0.26; 0.0.27; 0.0.28; 0.0.29; 0.0.30; 0.0.31; 0.0.32; 0.0.33; 0.0.34; 0.0.35; 0.0.36; 0.0.37; 0.0.38; 0.0.39; 0.0.40; 0.0.41; 0.0.42; 0.0.43; 0.0.44; 0.0.45; 0.0.46; 0.0.47; 0.0.48; 0.0.49; 0.0.50; 0.0.51; 0.0.52; 0.0.53; 0.0.54; 0.0.55; 0.0.56; 0.0.57; 0.0.58—No fix listedCNA
  • ag-ui Vendorag-ui-protocol Affected 0.0.1; 0.0.2; 0.0.3; 0.0.4; 0.0.5; 0.0.6; 0.0.7; 0.0.8; 0.0.9; 0.0.10; 0.0.11; 0.0.12; 0.0.13; 0.0.14; 0.0.15; 0.0.16; 0.0.17; 0.0.18; 0.0.19; 0.0.20; 0.0.21; 0.0.22; 0.0.23; 0.0.24; 0.0.25; 0.0.26; 0.0.27; 0.0.28; 0.0.29; 0.0.30; 0.0.31; 0.0.32; 0.0.33; 0.0.34; 0.0.35; 0.0.36; 0.0.37; 0.0.38; 0.0.39; 0.0.40; 0.0.41; 0.0.42; 0.0.43; 0.0.44; 0.0.45; 0.0.46; 0.0.47; 0.0.48; 0.0.49; 0.0.50; 0.0.51; 0.0.52; 0.0.53; 0.0.54; 0.0.55; 0.0.56; 0.0.57; 0.0.58 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*———
  • cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

No fixed version is listed for ag-ui. A pull request to fix this issue awaits acceptance.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-11-01 Threatist record created from CVE-2026-120233
  2. 2026-11-01 Alias added: GHSA-mm62-6q8x-jm5m
  3. 2026-11-03 Priority changed: MEDIUM → LOW
  4. 2026-11-05 CISA SSVC decision points changed
  5. 2026-11-05 Priority changed: LOW → HIGH

References

Exploit 1

Patch 1

Other 1

  • TI-2026-83636 Uncontrolled resource consumption in ag-ui-protocol ag-ui CVSS 4.0MEDIUM 5.3
  • TI-2026-83635 Improper input validation in ag-ui-protocol ag-ui Transport Decoder CVSS 4.0MEDIUM 5.3
  • TI-2026-83632 Uncontrolled resource consumption in ag-ui SSE parser CVSS 4.0MEDIUM 5.3
  • TI-2026-83628 Resource consumption in ag-ui-protocol ag-ui HTTP Transport CVSS 4.0MEDIUM 5.3
  • TI-2026-62298 ag-ui-protocol ag-ui SSE Frame sse.rs resource consumption CVSS 4.0MEDIUM 6.9
  • TI-2026-62299 ag-ui-protocol ag-ui JSON sse_parser.cpp resource consumption CVSS 4.0MEDIUM 5.3
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences