Vulnerability · Published Jan 19, 2026 · Assigned by CPANSec
CVE-2026-0943HarfBuzz::Shaper versions before 0.032 for Perl contains a bundled library with a null pointer dereference vulnerability
High 7.5
In plain English
A high-severity security flaw in HarfBuzz::Shaper from JV. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 57.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
HarfBuzz::Shaper versions before 0.032 for Perl contains a bundled library with a null pointer dereference vulnerability. Versions before 0.032 contain HarfBuzz 8.4.0 or earlier bundled as hb_src.tar.gz in the source tarball, which is affected by CVE-2026-22693.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:25.10 | libharfbuzz-shaper-perl | no fix listed | UBUNTU-CVE-2026-0943 |
| Ubuntu:26.04:LTS | libharfbuzz-shaper-perl | no fix listed | UBUNTU-CVE-2026-0943 |
| Ubuntu:26.10 | libharfbuzz-shaper-perl | no fix listed | UBUNTU-CVE-2026-0943 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| JV | HarfBuzz::Shaper | 0 – before 0.032 |
Weakness: CWE-1395 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H