CVE-2018-5153

critical
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
9.5

Description

If websocket data is sent with mixed text and binary in a single message, the binary data can be corrupted. This can result in an out-of-bounds read with the read memory sent to the originating server in response. This vulnerability affects Firefox < 60.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-5153

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201805-10

OS impact

OSVersionStatusFixed in
arch archfixed60.0-1
debian debiansidfixed60.0-1

References

Verify integrity in audit chain (admin only). AS-IS.