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CVE-2025-53628VulnerabilityPublished Updated

SUSE · Security update for cpp-httplib

Affects SUSESource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2025-53628· Medium 6.3

Not known to be exploited · CVSS 6.3 Medium : upgrade SUSE cpp-httplib to 0.20.1 when convenient.

Data as of 31 Oct 2026, 20:20 UTC

CVSS 4.0 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.20.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Jul 2025

  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 31 Oct 2026.

What to do

Upgrade yhirose/cpp-httplib to 0.20.1.

Affected software

ProductAffectedFixed in
GitHubyhirose/cpp-httplibpkg:github/yhirose/cpp-httplibOther threatsAffected
  • <0.20.1
Fixed in
  • 0.20.1

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

Description

Two security vulnerabilities have been identified in cpp-httplib, affecting the SUSE product. CVE-2025-53629 allows arbitrary memory allocation via HTTP headers on the server, potentially leading to memory exhaustion. CVE-2025-53628 involves HTTP header smuggling caused by insecure merging of trailers. These issues are classified as high severity.

References

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