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Vulnerability · Published Oct 20, 2026 · Assigned by VulnCheck

CVE-2026-113680HarfBuzz 8.0.0 through 14.6.0 WebAssembly Shaper NULL Pointer Dereference DoS

Medium 5.5

In plain English

A medium-severity null pointer dereference in harfbuzz from harfbuzz. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 93.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

HarfBuzz from 8.0.0 through 14.6.0 contains a NULL pointer dereference vulnerability in the experimental WebAssembly shaper host imports buffer_set_contents, face_create, and font_set_coords. Attackers can supply a crafted font whose embedded wasm module passes out-of-range addresses with non-zero lengths, crashing any application that shapes text with the font.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12harfbuzzno fix listedDEBIAN-CVE-2026-113680
Debian:13harfbuzzno fix listedDEBIAN-CVE-2026-113680
Debian:14harfbuzzno fix listedDEBIAN-CVE-2026-113680
Ubuntu:22.04:LTSharfbuzzno fix listedUBUNTU-CVE-2026-113680
Ubuntu:24.04:LTSharfbuzzno fix listedUBUNTU-CVE-2026-113680
Ubuntu:26.04:LTSharfbuzzno fix listedUBUNTU-CVE-2026-113680
Ubuntu:26.10harfbuzzno fix listedUBUNTU-CVE-2026-113680

Affected products (as reported)

VendorProductVersions
harfbuzz harfbuzz 8.0.0 – through 14.6.0

Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References