NVD / CVE Program· CNA snyk

CVE-2023-26116: Versions of the package angular from 1.2.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the angular.copy() utility…

MediumCVSS 5.3 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 1.6% (FIRST EPSS); higher than 77.4% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: angular.js (Debian:11) 1.8.3-1+deb12u1~deb11u1; angular.js (Debian:12) 1.8.3-1+deb12u1; angular.js (Debian:13) 1.8.3-2.

Low priority for now. Upgrade to angular.js (Debian:11) 1.8.3-1+deb12u1~deb11u1; angular.js (Debian:12) 1.8.3-1+deb12u1; angular.js (Debian:13) 1.8.3-2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Versions of the package angular from 1.2.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the angular.copy() utility function due to the usage of an insecure regular expression. Exploiting this vulnerability is possible by a large carefully-crafted input, which can result in catastrophic backtracking.

Published: Mar 30, 2023
Updated: Jun 17, 2026
EPSS: 1.6% · 77th percentile
CWE: CWE-1333

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 21 / 40 · 5.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 1.6%

CISA SSVC decision

Exploitation: proof of concept
Automatable: yes
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 5.3
CNA · snyk: 5.3; agree

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is the AngularJS on your site affected?Scan JavaScript libraries

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
angularjs	angularjs	cpe:2.3:a:angularjs:angularjs
fedoraproject	fedora	cpe:2.3:o:fedoraproject:fedora

Is the AngularJS on your site affected?

The free JavaScript library scanner reads the AngularJS version from the files your site loads, matches this record and other known vulnerabilities, and gives the safe version on the same branch. If the version can't be read, it says so. No account needed.

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (snyk). Independent of NVD's CPE analysis and usually ahead of it.

n/a angular
- 1.2.21 and lateraffected · semver
n/a org.webjars.bower:angular
- 1.2.21 and lateraffected · semver
n/a org.webjars.bowergithub.angular:angular
- all versionsaffected · semver
n/a org.webjars.npm:angular
- 1.2.23 and lateraffected · semver

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

angularjs angularjs1.2.21 and later · up to 1.8.3 inclusive
fedoraproject fedora38

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:11	angular.js	before 1.8.3-1+deb12u1~deb11u1	1.8.3-1+deb12u1~deb11u1
Debian:12	angular.js	before 1.8.3-1+deb12u1	1.8.3-1+deb12u1
Debian:13	angular.js	before 1.8.3-2	1.8.3-2
npm	angular	up to and including 1.8.3	—

Same product

angularjs: all records

Other highest-scoring records for the same primary product.

CVE-2022-25844Regular Expression Denial of Service (ReDoS)
31Monitor
CVE-2019-10768In AngularJS before 1.7.9 the function `merge()` could be tricked into adding or modifying properties of `Object.prototype` using a…
31Monitor
CVE-2022-25869All versions of the package angular; all versions of the package angularjs.core; all versions of the package angularjs are vulnerable to…
26Monitor

Published before and after this one in the same product

← EarlierCVE-2019-14863Jan 2, 2020 · There is a vulnerability in all angular versions before 1.5.0-beta.0, where after escaping the context of the web application, the web…
24Monitor
← EarlierCVE-2020-7676Jun 8, 2020 · angular.js prior to 1.8.0 allows cross site scripting.
22Monitor
Later →CVE-2023-26117Mar 30, 2023 · Versions of the package angular from 1.0.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the $resource service due to…
22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
debian:angular.js	1.8.3-1+deb12u1 · Debian:12	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.