CVE catalog
CVE-2026-29078
DEBIAN-CVE-2026-29078
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.27% · Oct 25, 2026
Lexbor is a web browser engine library. Prior to 2.7.0, the ISO‑2022‑JP encoder in Lexbor fails to reset the temporary size variable between iterations. The statement ctx->buffer_used -= size with a stale size = 3 causes an integer underflow that wraps to SIZE_MAX. Afterwards, memcpy is called with a negative length, leading to an out‑of‑bounds read from the stack and an out‑of‑bounds write to the heap. The source data is partially controllable via the contents of the DOM tree. This vulnerability is fixed in 2.7.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | lexbor | 14 | 2.6.0-1 | vulnerable |
| Debian | lexbor | 14 | 2.6.0-2 | vulnerable |
| Debian | lexbor | 14 | 3.0.0-1~exp1 | vulnerable |
| Debian | lexbor | 14 | 3.0.0-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | lexbor | deb | 14 | 3.0.0-1 | Not reported | DEBIAN-CVE-2026-29078 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: