CVE-2026-5858: google chrome Heap-based Buffer Overflow
Vulnerability summary
CVE-2026-5858 is a high (CVSS 8.8) Heap-based Buffer Overflow vulnerability in google chrome. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 49.1% of scored vulnerabilities.
Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 4Timeline
- 08-04-2026PublishedVulnerability first disclosed.
- 13-04-2026Last modifiedVulnerability information updated.
Description
Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)
CVSS metrics
3 scores · 3 sources · 1 version- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.61%
Chance of exploitation in the next 30 days
Percentile
49%
Versus all other CVEs
30-day change
Increase +0.04 pp
From 0.57% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard1 product
- chromium< 147.0.7727.101-r0
Debian1 product
- chromium< 147.0.7727.55-1~deb12u1 | < 147.0.7727.55-1~deb13u1 | < 147.0.7727.55-1
Google1 product
- chrome≥ 147.0.7727.55, < 147.0.7727.55 | < 147.0.7727.55
Wolfi1 product
- chromium< 147.0.7727.101-r0
4 vendors · 4 products
References
3 links- chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.htmlRelease NotesVendor Advisory
- issues.chromium.org/issues/493319454Permissions Required
