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TI-2026-41875 Aliases CVE-2026-58157GHSA-vc32-c93g-p2f6

Apache Traffic Server: Improper server-session reuse can expose data across client connections

Priority LOW 33CWE-200Published · Updated

Key facts

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

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

Summary

Apache Traffic Server can reuse server sessions and tunnels improperly, exposing data across client connections. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00485 42nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
ApacheApache Traffic Server8.0.0 – 8.1.11; 9.0.0 – 9.2.14; 10.0.0 – 10.1.3—No fix listedCNA
  • Apache Traffic Server VendorApache Affected 8.0.0 – 8.1.11; 9.0.0 – 9.2.14; 10.0.0 – 10.1.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*8.0.0 – 8.1.9; 9.0.0 to before 9.2.15; 10.0.0 to before 10.1.4VulnerableApache
  • cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:* Versions 8.0.0 – 8.1.9; 9.0.0 to before 9.2.15; 10.0.0 to before 10.1.4 Vulnerable ·Apache

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Apache Traffic Server — lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d

    38 records Highest priority Priority MEDIUM 21 MEDIUM, 17 LOW

    Other records, highest priority first

    • TI-2026-41879 Apache Traffic Server: Memory-safety errors in TLS and SNI handling can crash the serverPriority MEDIUM 47
    • TI-2026-41873 Apache Traffic Server: Header-name length truncation enables header aliasing and request smugglingPriority MEDIUM 46
    • TI-2026-41869 Apache Traffic Server: Abusive HTTP/2 framing can exhaust resources and crash the serverPriority MEDIUM 45
    Show all 38 records → Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58157
  2. 2026-10-03 Alias added: GHSA-vc32-c93g-p2f6

References

Advisory 1

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-20685 Apache Traffic Server: HTTP/2 CONTINUATION frames can be utilized for DoS attack CVSS 3.1HIGH 7.5
  • TI-2019-06950 Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a… CVSS 3.1HIGH 7.5
  • TI-2019-06949 Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a… CVSS 3.1HIGH 7.5
  • TI-2019-06947 Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a… CVSS 3.1HIGH 7.5
  • TI-2023-20588 Apache Traffic Server: Malformed http/2 frames can cause an abort CVSS 3.1HIGH 7.5
See all 120 →

Sources

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