CVE-2023-26142

MEDIUMNVD 6.56.1▼
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2023-09-19. NVD baseline CVSS 6.5; sources differ by 0.4.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.5
EG Score
6.1(medium)
EPSS
36.2%
KEV
Not listed

Published

September 12, 2023

Last Modified

November 21, 2024

References (4)

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:25 UTCEPSS rescore
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  58. 2026-05-26 07:17 UTCEPSS rescore
  59. 2026-05-24 17:46 UTCEG score recompute
  60. 2026-05-24 17:46 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-26142?
CVE-2023-26142 is a medium vulnerability published on September 12, 2023. 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 setheader and addheader functions. An attacker can add the \r\n (carriage return line feeds)…
When was CVE-2023-26142 disclosed?
CVE-2023-26142 was first published in the National Vulnerability Database on September 12, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-26142 actively exploited?
CVE-2023-26142 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-26142?
CVE-2023-26142 has a CVSS v3 base score of 6.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.1.
How do I remediate CVE-2023-26142?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-26142, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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