CVE-2018-12911

WebKitGTK+ 2.20.3 has an off-by-one error, with a resultant out-of-bou ...

Published 19 Jul 2018Modified 17 Jun 2026CWE 787

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Ubuntu (medium).

Description

WebKitGTK+ 2.20.3 has an off-by-one error, with a resultant out-of-bounds write, in the get_simple_globs functions in ThirdParty/xdgmime/src/xdgmimecache.c and ThirdParty/xdgmime/src/xdgmimeglob.c.

Affected packages and fixed versions

Source	Package	Fixed in
alpine 3.8	webkit2gtk	2.20.4-r0
debian 11	webkit2gtk	2.20.4-1
debian 12	webkit2gtk	2.20.4-1
debian 13	webkit2gtk	2.20.4-1
debian 14	webkit2gtk	2.20.4-1
echo	webkit2gtk	2.20.4-1
ubuntu 16.04	webkit2gtk	2.20.5-0ubuntu0.16.04.1
ubuntu 16.04-ESM	webkit2gtk	2.20.5-0ubuntu0.16.04.1
ubuntu 18.04	webkit2gtk	2.20.5-0ubuntu0.18.04.1
ubuntu 18.04-ESM	webkit2gtk	2.20.5-0ubuntu0.18.04.1

References

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.