CVE-2026-125350: Use after free in XML in Google Chrome prior to 157.0.8103.50 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
CVE-2026-125350 is an edge - chromium vulnerability in Use after free in XML in Google Chrome prior to 157.0.8103.50 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High), rated Important by Microsoft, with a CVSS 3.1 base score of 8.8 (High). An attacker can exploit it remotely over the network, without any privileges and only if a user takes an action. Microsoft has not reported exploitation in the wild. The EPSS model estimates a 0.96% probability of exploitation activity in the next 30 days, higher than 62% of all scored vulnerabilities. Microsoft released the fix on 13 November 2026, outside Patch Tuesday. It affects 2 products in 2 product families (Open Source Software, Browser).
Key facts
- CVE ID
- CVE-2026-125350
- Severity
- High CVSS 8.8
- Microsoft severity
- Important
- Impact
- Edge - Chromium
- Exploited in the wild
- No
- Publicly disclosed
- No
- Weakness
- CWE-416
- EPSS
- 0.96% (percentile 62%)
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- November 2026 Patch Tuesday
- Product families
- Open Source Software, Browser
CVSS score and vector
Microsoft scores CVE-2026-125350 at 8.8 (temporal 8.8) using CVSS 3.1. Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H
| Metric | Value |
|---|---|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality impact | High |
| Integrity impact | High |
| Availability impact | High |
| Exploit code maturity | High |
Affected products (2)
Open Source Software
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| azl3 libxslt 1.1.43-3 on Azure Linux 3.0 | Release Notes | Security Update |
Browser
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Microsoft Edge (Chromium-based) | Release Notes Release Notes | Security Update Security Update | 157.0.4341.46 156.0.4314.80 | No No |
Exploitation and detection
Detection and weaponization
Weaponization maturity: Exploit.
Proof-of-concept repositories (5)
NIST NVD data
- NVD status
- Analyzed
- NVD CVSS
- 8.8 (HIGH)
- NVD weakness
- CWE-416
- Published to NVD
- NVD last modified
Affected configurations (CPE)
| Product | Vulnerable versions |
|---|---|
| chrome | before 157.0.8103.50 |
References
- https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop_018223192.html (Release Notes, Vendor Advisory)
- https://issues.chromium.org/issues/582442907 (Permissions Required)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-125350 (US Government Resource)
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. | |
| 1.1 | Added Microsoft Edge software to the Security Updates table. Customers that are running supported version of Microsoft Edge are encouraged to update to the indicated version to be protected from this vulnerability. |