Security Digest · Vulnerability record
CVE-2026-44643: Angular Expressions - Remote Code Execution using filters
Angular Expressions provides expressions for the Angular.JS web framework as a standalone module.
CVSS 9.3 Critical EPSS 0.7% · p52
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.7%, percentile 52: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 52% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
angular-expressions(npm) <= 1.5.1, fixed in 1.5.2. Check your lockfile, including transitive dependencies.
What it is
Angular Expressions provides expressions for the Angular.JS web framework as a standalone module. Prior to 1.5.2, an attacker can write a malicious expression using filters that escapes the sandbox to execute arbitrary code on the system. This vulnerability is fixed in 1.5.2.
From the GitHub advisory
Impact
An attacker can write a malicious expression that escapes the sandbox to execute arbitrary code on the system.
Example of vulnerable code:
This should throw the error : Filter 'proto' is not defined, however, this shows :
Uncaught SyntaxError: Unexpected identifier 'Object'
Weakness type: CWE-95.
Product: angular-expressions (npm) · Assigned by: GitHub_M · Published: 2026-05-11
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| npm | angular-expressions | <= 1.5.1 | 1.5.2 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| peerigon | angular-expressions | < 1.5.2 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| GitHub | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Attack requirements: none
- Privileges required: none (no login)
- User interaction: none
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none, automatable yes, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.69% probability of exploitation activity in the next 30 days; percentile 52.
Timeline
- — CVE record last updated
- — CVE record published by GitHub_M
- — GitHub-reviewed advisory GHSA-pw8r-6689-xvf4 published (critical)
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-pw8r-6689-xvf4 github.com
- CVE.org record CVE-2026-44643 cve.org
- NVD entry CVE-2026-44643 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com