CVE-2026-5274
Google Chrome ≤ 146.0.7680.177
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSummary
CVE-2026-5274 is a high-severity External Control of Assumed-Immutable Web Parameter (CWE-472) vulnerability in Google Chrome. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 26th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-5274 is an integer overflow vulnerability in the Codecs component of Google Chrome versions prior to 146.0.7680.178. The flaw, classified under CWE-472, enables a remote attacker to perform arbitrary read and write operations through a specially crafted HTML page. It carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) and is rated High severity by Chromium security.
A remote attacker can exploit this vulnerability by tricking a user into visiting a malicious website hosting the crafted HTML page, as it requires user interaction but no special privileges. Successful exploitation grants arbitrary read/write capabilities, potentially allowing full compromise of the affected browser process with high impacts on confidentiality, integrity, and availability.
Mitigation is provided in Google Chrome 146.0.7680.178 and later versions, as detailed in the Chrome stable channel update release notes at https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html and the associated Chromium issue tracker at https://issues.chromium.org/issues/488596746. Security practitioners should ensure users update to the patched version promptly.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-17783
Vulnerability Data
Integer overflow in Codecs in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-10 directly requires validation of all inputs, eliminating the assumption that client-supplied parameters remain immutable.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly require server-side validation of all inputs instead of trusting client-supplied immutable parameters.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Secure coding standards require server-side verification of client-supplied data, eliminating the root cause of external control of immutable parameters.
Security testing in development and acceptance will detect parameter tampering vulnerabilities before deployment.
Secure development lifecycle mandates input validation and integrity checks that directly prevent external tampering of assumed-immutable parameters.
Application security requirements explicitly call for validation of all inputs, including hidden fields, mitigating CWE-472.
Information access restriction can limit which parameters users may influence, providing a secondary layer of defense.