🛡️ CVE-2021-1826 on Debian — webkit2gtk

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may lead to universal cross site scripting.

Distribution advisory

This page covers CVE-2021-1826 as tracked by Debian, for the package webkit2gtk. The fix is available in version 2.30.1-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Affected software

DEBIAN-CVE-2021-1826 is recorded against 2 packages.

webkit2gtk (fixed in 2.30.1-1)
wpewebkit (fixed in 2.30.0-1)

Timeline and source

Published on 8 September 2021 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2021-1826 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Ubuntu

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2021-09-08

Updated 2026-08-20

Modified 2026-08-04

Fix URL N/A

Affected Packages

Software	From version	Fixed in
webkit2gtk	—	2.30.1-1
wpewebkit	—	2.30.0-1

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2021-1826

🔗 NVD 🔗 Mitre

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