CVE-2021-42762

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.53% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 45.0% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-10-20 18:15Z5 YR AGO

Last updated

2024-08-04 03:38Z2 YR AGO

Reserved

2021-10-20

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

077b5dff7e7de64da79ec02ce22869232e640abd4fd7511b16e5c6af2f3ed714

• github.comhttps://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4qx_refsource_MISC
• bugs.webkit.orghttps://bugs.webkit.org/show_bug.cgi?id=231479x_refsource_MISC
• www.openwall.com[oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006http://www.openwall.com/lists/oss-security/2021/10/26/9mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006http://www.openwall.com/lists/oss-security/2021/10/27/1mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006http://www.openwall.com/lists/oss-security/2021/10/27/2mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006http://www.openwall.com/lists/oss-security/2021/10/27/4mailing-listx_refsource_MLIST
• www.debian.orgDSA-4995https://www.debian.org/security/2021/dsa-4995vendor-advisoryx_refsource_DEBIAN
• www.debian.orgDSA-4996https://www.debian.org/security/2021/dsa-4996vendor-advisoryx_refsource_DEBIAN
• lists.fedoraproject.orgFEDORA-2021-db6ebb2d68https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M5J2LZQTDX53DNSKSGU7TQYCO2HKSTY4/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-131360fa9ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-483d896d1dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/vendor-advisoryx_refsource_FEDORA