{"id":"UBUNTU-CVE-2026-116135","details":"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.","modified":"2026-11-04T03:30:34.514482642Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-116135"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-116135"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-116135"},{"type":"REPORT","url":"https://lists.security.metacpan.org/cve-announce/msg/44711937/"},{"type":"REPORT","url":"https://github.com/libwww-perl/HTTP-Body/commit/336f1a23b4115a5cbeb546f36df5af62c90bdc0d.patch"},{"type":"REPORT","url":"https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes"},{"type":"REPORT","url":"https://www.rfc-editor.org/rfc/rfc3986#section-2.1"}],"affected":[{"package":{"name":"libhttp-body-perl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.22-1","binary_name":"libhttp-body-perl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116135.json"}},{"package":{"name":"libhttp-body-perl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libhttp-body-perl","binary_version":"1.22-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116135.json"}},{"package":{"name":"libhttp-body-perl","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.22-1","binary_name":"libhttp-body-perl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116135.json"}},{"package":{"name":"libhttp-body-perl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22-1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libhttp-body-perl","binary_version":"1.22-1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116135.json"}},{"package":{"name":"libhttp-body-perl","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.22-2","binary_name":"libhttp-body-perl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116135.json"}},{"package":{"name":"libhttp-body-perl","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.23-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.23-1","binary_name":"libhttp-body-perl"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116135.json"}},{"package":{"name":"libhttp-body-perl","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.23-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libhttp-body-perl","binary_version":"1.23-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116135.json"}}],"schema_version":"1.9.2","severity":[{"type":"Ubuntu","score":"medium"}]}