🛡️ CVE-2025-62517 — rollbar

🟡 CVSS 5.9 — Medium ✅ No Known Exploit CWE-1321 NVD
5.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

rollbar vulnerable to Prototype Pollution in merge()

Impact

Prototype pollution vulnerability in merge(). If application code calls rollbar.configure() with untrusted input, prototype pollution is possible.

Patches

Fixed in 2.26.5 and 3.0.0-beta5.

Workarounds

Ensure that values passed to rollbar.configure() do not contain untrusted input.

References

Fixed in https://github.com/rollbar/rollbar.js/pull/1394 (2.26.x) and https://github.com/rollbar/rollbar.js/pull/1390 (3.x)

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability none.

Weakness class

CVE-2025-62517 is classified as CWE-1321: Prototype Pollution. Attacker input can modify an object prototype, changing behaviour for objects across the application.

Affected software

CVE-2025-62517 is recorded against 2 packages.

  • rollbar
  • unknown

Timeline and source

Published on 23 October 2025 and last revised on 24 October 2025. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)

Details

Severity Medium
CVSS Score 5.9
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE CWE-1321
Public Exploit ✅ No
Source NVD
Published 2025-10-23
Updated 2026-08-12
Modified 2025-10-24
Fix URL N/A

Affected Packages

Software From version Fixed in
rollbar — —
unknown — —

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