CVE Program Container

Answer in brief

CVE-2022-26485 records a High severity (CVSS 8.8) vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Mozilla/Firefox (generic), Mozilla/Firefox ESR (generic), Mozilla/Firefox for Android (generic), Mozilla/Focus (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Dec 22, 2022Updated Aug 19, 2026Source checked Sep 19, 2026First seen by HOL May 24, 2026Material review Aug 19, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.8
Exploitation: Known exploited
Affected software: 10 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 8.8. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Mozilla/Firefox (generic), Mozilla/Firefox ESR (generic), Mozilla/Firefox for Android (generic), Mozilla/Focus (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:mozilla:firefox:::::-:::*	Not reported	Not reported
cpe:2.3:a:mozilla:firefox:::::esr:::*	Not reported	Not reported
cpe:2.3:a:mozilla:firefox_focus::::::::	Not reported	Not reported
cpe:2.3:a:mozilla:firefox_mobile::::::android::*	Not reported	Not reported
cpe:2.3:a:mozilla:thunderbird::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Mozilla/Firefoxgeneric	>=unspecified <97.0.2	97.0.2
Mozilla/Firefox ESRgeneric	>=unspecified <91.6.1	91.6.1
Mozilla/Firefox for Androidgeneric	>=unspecified <97.3.0	97.3.0
Mozilla/Focusgeneric	>=unspecified <97.3.0	97.3.0
Mozilla/Thunderbirdgeneric	>=unspecified <91.6.2	91.6.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for Mozilla/Firefox, Mozilla/Firefox ESR, Mozilla/Firefox for Android.
Review the reported fix. Update Mozilla/Firefox to 97.0.2; Mozilla/Firefox ESR to 91.6.1; Mozilla/Firefox for Android to 97.3.0; Mozilla/Focus to 97.3.0; Mozilla/Thunderbird to 91.6.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Dec 22, 2022
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
May 24, 2026
Added to CISA KEV
Mar 7, 2022
Evidence: source:kev:kev:kev:record

Sources and claim methodology

Upstream source description

Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.

Quoted source text, attributed separately from HOL analysis.