Vulnerability · Published Oct 26, 2026 · Assigned by Qt
CVE-2026-107157Out-of-bounds read vulnerability in QCborValue::fromCbor() impacts Qt Framework
Low 2.0
In plain English
A low-severity out-of-bounds read in Qt from qt. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Severity (CVSS 4.0)2.0Low
Exploit odds (30 days)0.1%top 96.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Specially crafted CBOR input passed to QCborValue::fromCbor() in Qt Core can cause an out-of-bounds read, which may crash the application and could expose information.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | qt6-base | no fix listed | DEBIAN-CVE-2026-107157 |
| Debian:13 | qt6-base | no fix listed | DEBIAN-CVE-2026-107157 |
| Debian:14 | qt6-base | no fix listed | DEBIAN-CVE-2026-107157 |
| Debian:12 | qtbase-opensource-src | no fix listed | DEBIAN-CVE-2026-107157 |
| Debian:13 | qtbase-opensource-src | no fix listed | DEBIAN-CVE-2026-107157 |
| Debian:14 | qtbase-opensource-src | no fix listed | DEBIAN-CVE-2026-107157 |
| Ubuntu:26.04:LTS | qtbase-opensource-src | no fix listed | UBUNTU-CVE-2026-107157 |
| Ubuntu:26.10 | qtbase-opensource-src | no fix listed | UBUNTU-CVE-2026-107157 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/RE:L/U:Amber