Auto-added after CISA flagged Brotli as actively exploited (KEV catalog). Version and lifecycle mapping is pending review, so this is assessed at the product level and is never reported as a confident "healthy".
Summary iPlain-English security verdict for Brotli, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Brotli currently scores 20/100 — critical, with active exploitation. 1 of its known vulnerability is being actively exploited in the wild (CISA KEV), including CVE-2026-111497. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
The known vulnerabilities
IsItPatched tracks 2 known vulnerabilities in Google Brotli disclosed between 2020 and 2026. CVE-2020-8927 is a medium-severity vulnerability (CVSS 5.3). CVE-2026-111497 is a critical-severity vulnerability (CVSS 9.8), which is actively exploited in the wild (CISA KEV). Move to a patched, supported release — this issue is being exploited in the wild, so treat it as urgent.
Disclosure trend iNew CVEs published for Brotli each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2026-111497 CRITICAL exploited CWE-252 EPSS 83% → fixed in 1.2.1Get alerted about Brotli
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Frequently asked
Is Brotli safe and patched?
Brotli currently scores 20/100 — critical, with active exploitation. 1 of its known vulnerability is being actively exploited in the wild (CISA KEV), including CVE-2026-111497. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
What should I do about Brotli now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against Google's official advisory. Some issues are under active exploitation, so treat this as urgent.
Why is Brotli listed on IsItPatched?
Brotli was added automatically because CISA's Known Exploited Vulnerabilities (KEV) catalog flagged it as actively exploited in the wild. IsItPatched tracks its known CVEs, severity (CVSS), exploitation probability (EPSS) and KEV status from public data; its version and lifecycle mapping is verified over time.
Has Brotli been actively exploited?
Yes. CISA added Brotli to its Known Exploited Vulnerabilities (KEV) catalog after confirming exploitation in the wild — the triggering vulnerability is CVE-2026-111497. Make sure you are running a patched, supported version of Brotli and confirm it against Google's security advisory.
Similar software we track
More from Google tracked on IsItPatched.
lifecycle unknown — needs latest supported version
Latest security news for Brotli BETA
Attributed third-party reporting linked to Brotli — newest first. We surface and link the source; we don’t assert our own findings. About Emerging →
More across all tracked software on the Emerging feed →
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Google's official advisory before you patch or upgrade.