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TI-2023-11366 Aliases CVE-2023-26142GHSA-3r2p-c9r5-pw6w

HTTP response splitting in Crow

Priority HIGH 68CWE-113Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

All versions of the package crow are vulnerable to HTTP Response Splitting when untrusted user input is used to build header values. Header values are not properly sanitized against CRLF Injection in the set_header and add_header functions. An attacker can add the \r\n (carriage return line feeds) characters to end the HTTP response headers and inject malicious content.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0056 46th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—Crowall versions—No fix listedCNA
  • Crow Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:crowcpp:crow:*:*:*:*:*:*:*:*before 1.3.2VulnerableCrowCpp
  • cpe:2.3:a:crowcpp:crow:*:*:*:*:*:*:*:* Versions before 1.3.2 Vulnerable ·CrowCpp

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-26142
  2. 2026-10-03 Alias added: GHSA-3r2p-c9r5-pw6w

References

Exploit 1

  • TI-2022-15735 Crow before 1.0+4 has a heap-based buffer overflow via the function qs_parse in… CVSS 3.1CRITICAL 9.8
  • TI-2022-18200 HTTP applications (servers) based on Crow through 1.0+4 may allow a Use-After-Free and… CVSS 3.1CRITICAL 9.8
  • TI-2022-18201 HTTP applications (servers) based on Crow through 1.0+4 may reveal potentially sensitive… CVSS 3.1HIGH 7.5
  • TI-2021-06154 Path traversal in Crow CVSS 3.1HIGH 7.5
  • TI-2021-06197 Content Injection CVSS 3.1MEDIUM 6.5

Sources

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