CVE-2026-116135: Libhttp body perl · HTTP::Body versions before 1.23_01 for Perl drop mixed-case percent escapes from
Affects libhttp-body-perlSource GCVE Database
Not known to be exploited.
Data as of 5 Nov 2026, 12:35 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10libhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
HTTP::Body versions before 1.23_01 for Perl drop mixed-case percent escapes from urlencoded form fields instead of decoding them. The decode table holds only the all-lowercase and all-uppercase spelling of each hex pair, while the escape pattern matches either case. An escape such as %aB finds no entry and is replaced with nothing, joining the bytes on either side. Hex digits in percent escapes are case-insensitive, and conforming decoders return the byte. A remote attacker can send a field name or value that a conforming decoder in front of the application reads differently, so that pass%aBword reaches the application as password.
References
- ubuntu.com/security/CVE-2026-116135 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-116135 (opens in a new tab)
- lists.security.metacpan.org/cve-announce/msg/44711937/ (opens in a new tab)
- github.com/libwww-perl/HTTP-Body/commit/336f1a23b4115a5cbeb546f36df5af62c90bdc0d.patch (opens in a new tab)
- metacpan.org/release/GETTY/HTTP-Body-1.24/changes (opens in a new tab)
- rfc-editor.org/rfc/rfc3986 (opens in a new tab)