{"id":"CVE-2026-102555","title":"A flaw was found in libsoup","summary":"A flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL byt…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cwe":["CWE-125"],"vendor":"gnome","product":"libsoup","affected":["libsoup < 3.7.3","enterprise_linux = 9.0","enterprise_linux = 10.0"],"patched":["libsoup 3.7.3"],"published":"2026-09-29","updated":"2026-10-15","sourceUpdated":"2026-10-15T17:17:09.120","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102555","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:83618","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-102555","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543224","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102555.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-102555"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102555"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-29T18:16:58.196973Z"},"epss":0.00369,"epssPercentile":0.30596,"ingestedAt":"2026-09-29T17:41:02.261Z","slug":"CVE-2026-102555","body":"## Overview\n\nA flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL bytes, the decoded length could remain uninitialized and be used as the size of the returned GBytes. This can lead to an out-of-bounds read or application crash when processing a crafted data URI.\n\n## Affected\n\n- `libsoup < 3.7.3`\n- `enterprise_linux = 9.0`\n- `enterprise_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `libsoup 3.7.3`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-02 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102555.json)","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}