DEBIAN-CVE-2026-0992
Record from OSV · Published January 15, 2026
A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| libxml2 | Debian:12 | 2.9.14+dfsg-1.3~deb12u6 |
| libxml2 | Debian:14 | 2.15.2+dfsg-0.1 |
| libxml2 | Debian:13 | 2.12.7+dfsg+really2.9.14-2.1+deb13u3 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | libxml2 | 2.9.14+dfsg-1.3~deb12u5, 2.9.14+dfsg-1.3~deb12u4, 2.9.14+dfsg-1.3~deb12u3 |
| Debian:14 | libxml2 | 2.14.3+dfsg-0exp1, 2.14.3+dfsg-0exp2, 2.14.3+dfsg-0exp3 |
| Debian:13 | libxml2 | 2.12.7+dfsg+really2.9.14-2.1+deb13u2, 2.12.7+dfsg+really2.9.14-2.1+deb13u1, 2.12.7+dfsg+really2.9.14-2.1 |
Timeline
- Jan 15, 2026 CVE Published
- Oct 1, 2026 CVE Updated
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