CVE-2026-5888
published 2026-04-08CVE-2026-5888: Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process…
PriorityP431medium6.5CVSS 3.1
AVNACLPRNUIRSUCHINAN
EPSS
0.26%
17.5th percentile
Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | chromium | < chromium 147.0.7727.55-1 (sid) | chromium 147.0.7727.55-1 (sid) |
| chrome | < 147.0.7727.55 | 147.0.7727.55 | |
| chrome | >= 147.0.7727.55 < 147.0.7727.55 | 147.0.7727.55 | |
| chrome_chrome | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
osv6.5MEDIUM
vendor_debian6.5MEDIUM
vendor_redhat6.5MEDIUM
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VulDB
Google Chrome up to 146.0.7680.178 WebCodecs uninitialized variable (ID 486506 / WID-SEC-2026-1030)
vuldb·2026-04-11·CVSS 6.5
CVE-2026-5888 [MEDIUM] Google Chrome up to 146.0.7680.178 WebCodecs uninitialized variable (ID 486506 / WID-SEC-2026-1030)
A vulnerability has been found in Google Chrome and classified as problematic. The impacted element is an unknown function of the component WebCodecs. The manipulation leads to use of uninitialized variable.
This vulnerability is traded as CVE-2026-5888. It is possible to initiate the attack remotely. There is no exploit available.
The affected component should be upgraded.
GHSA
GHSA-jvch-x2xh-p75v: Uninitialized Use in WebCodecs in Google Chrome prior to 147
ghsa_unreviewed·2026-04-09
CVE-2026-5888 CWE-457 GHSA-jvch-x2xh-p75v: Uninitialized Use in WebCodecs in Google Chrome prior to 147
Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)
OSV
CVE-2026-5888: Uninitialized Use in WebCodecs in Google Chrome prior to 147
osv·2026-04-08·CVSS 6.5
CVE-2026-5888 [MEDIUM] CVE-2026-5888: Uninitialized Use in WebCodecs in Google Chrome prior to 147
Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)
Red Hat
chromium-browser: Uninitialized Use in WebCodecs
vendor_redhat·2026-04-07·CVSS 6.5
CVE-2026-5888 [MEDIUM] CWE-824 chromium-browser: Uninitialized Use in WebCodecs
chromium-browser: Uninitialized Use in WebCodecs
An uninitialized use flaw was found in the WebCodecs component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=486506202
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Chrome
Stable Channel Update for Desktop: CVE-2026-5888
vendor_chrome·2026-04-07·CVSS 6.5
CVE-2026-5888 [MEDIUM] Stable Channel Update for Desktop: CVE-2026-5888
Stable Channel Update for Desktop
CVE-2026-5888: Uninitialized Use in WebCodecs. Reported by Identified by the Octane Security Team: Giovanni Vignone, Paolo Gentry, Robert van Eijk on 2026-02-22 [TBD][ 486906037 ] Medium CVE-2026-5889: Cryptographic Flaw in PDFium
Reported by mlafon on 2026-02-23 [TBD][ 487259772 ] Medium CVE-2026-5890: Race in WebCodecs
Severity: medium
Debian
CVE-2026-5888: chromium - Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a...
vendor_debian·2026·CVSS 6.5
CVE-2026-5888 [MEDIUM] CVE-2026-5888: chromium - Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a...
Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)
Scope: local
bookworm: open
bullseye: open
forky: open
sid: resolved (fixed in 147.0.7727.55-1)
trixie: open
No detection rules found.
No public exploits indexed.
Sans Isc
Microsoft Patch Tuesday April 2026., (Tue, Apr 14th)
blogs_sans_isc·2026-04-14·CVSS 8.8
[HIGH] Microsoft Patch Tuesday April 2026., (Tue, Apr 14th)
Microsoft Patch Tuesday April 2026.
Published: 2026-04-14. Last Updated: 2026-04-14 17:46:09 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
This month's Microsoft Patch Tuesday looks like a record one, but let's look at it a bit closer to understand what is happening
The update patches a total of 243 vulnerabilities. However, 78 of them are Chromium issues affecting Microsoft Edge. Patches for Edge were released earlier. This leaves 165 vulnerabilities that are not Edge-related. Of these, 8 are rated critical, and 154 are important. One vulnerability has already been exploited, and another was made public before today but has not yet been seen in the wild.
Noteworthy Vulnerabilities:
CVE-2026-33827 (Windows TCP/IP Remote Code Execution Vulnerability): As a packet nerd, I love thes
Wiz
CVE-2026-5888 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 8.8
CVE-2026-5888 [HIGH] CVE-2026-5888 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-5888 :
Google Chrome vulnerability analysis and mitigation
Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)
Source : NVD
Published April 8, 2026
CNA Score N/A
Affected Technologies
Google Chrome
Chromium
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 9.4
Exploitation Probability (EPSS) N/A
Affected packages and libraries
chromium
cpe:2.3:a:google:chrome
Sources
NVD
Debian 11, 12, 13, 14 No Fix Added at: Apr 09, 2026
Echo No Fix Added at: Apr 09, 2026
Linux Has Fix Added at: Apr 09, 2026
Windows H
Bugzilla
CVE-2026-5888 chromium-browser: Uninitialized Use in WebCodecs
bugzilla·2026-04-08·CVSS 6.5
CVE-2026-5888 [MEDIUM] CVE-2026-5888 chromium-browser: Uninitialized Use in WebCodecs
CVE-2026-5888 chromium-browser: Uninitialized Use in WebCodecs
Uninitialized Use in WebCodecs in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Medium)
2026-04-08
Published