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CVE-2026-54387VulnerabilityPublished Updated

SUSE · Security update for tinyproxy

Affects SUSESource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-54387· Critical 9.3

Not known to be exploited · CVSS 9.3 Critical.

Data as of 10 Nov 2026, 20:07 UTC

CVSS 4.0 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.09.3
CNA (VulnCheck)CVSS 3.19.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  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), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
tinyproxytinyproxyAffected
  • <=1.11.3
Fixed in–
GitHubtinyproxypkg:github/tinyproxyOther threatsAffected
  • <=1.11.3
Fixed in–

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

AI-suggested

A security update has been released that fixes these vulnerabilities. Users of tinyproxy should apply the update provided by the vendor or their distribution to remediate these issues. No additional mitigation steps are indicated.

Description

This security update for tinyproxy addresses multiple vulnerabilities related to HTTP header handling. The fixes include resolving issues with conflicting Content-Length and Transfer-Encoding headers, rejecting requests with multiple differing Content-Length headers, and properly validating the Host header during stathost detection.

References

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