GHSA-v2p6-4mp7-3r9v
Regular Expression Denial of Service in underscore.string
Versions of underscore.string prior to 3.3.5 are vulnerable to Regular Expression Denial of Service (ReDoS).
The function unescapeHTML is vulnerable to ReDoS due to an overly-broad regex. The slowdown is approximately 2s for 50,000 characters but grows exponentially with larger inputs.
Recommendation
Upgrade to version 3.3.5 or higher.
What each source reports
GitHub AdvisoriesNo score
Regular Expression Denial of Service in underscore.string
Versions of underscore.string prior to 3.3.5 are vulnerable to Regular Expression Denial of Service (ReDoS).
The function unescapeHTML is vulnerable to ReDoS due to an overly-broad regex. The slowdown is approximately 2s for 50,000 characters but grows exponentially with larger inputs.
Recommendation
Upgrade to version 3.3.5 or higher.
- Record
GHSA-v2p6-4mp7-3r9v- Weakness
- CWE-400
- Updated
- 2026-11-02
OSVCLSA-2026-1775003174No score
TuxCare security update for underscore.string (1 CVE)
TuxCare rebuilt underscore.string to address 1 CVE. Fixed in 2.3.3-tuxcare.1.
- Record
CLSA-2026-1775003174- Updated
- 2026-11-02
OSVCLSA-2026-1775003175No score
TuxCare security update for underscore.string (1 CVE)
TuxCare rebuilt underscore.string to address 1 CVE. Fixed in 2.2.1-tuxcare.1.
- Record
CLSA-2026-1775003175- Updated
- 2026-11-02
OSVNo score
Regular Expression Denial of Service in underscore.string
Versions of underscore.string prior to 3.3.5 are vulnerable to Regular Expression Denial of Service (ReDoS).
The function unescapeHTML is vulnerable to ReDoS due to an overly-broad regex. The slowdown is approximately 2s for 50,000 characters but grows exponentially with larger inputs.
Recommendation
Upgrade to version 3.3.5 or higher.
- Record
GHSA-v2p6-4mp7-3r9v- Weakness
- CWE-400
- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
underscore.stringnpm | before 3.3.5 | 3.3.5 |
underscore.stringTuxCare:npm | 2.3.3-tuxcare.0 up to 2.3.3-tuxcare.1, plus listed versions 2.3.3 | 2.3.3-tuxcare.1 |
underscore.stringTuxCare:npm | 2.2.1-tuxcare.0 up to 2.2.1-tuxcare.1, plus listed versions 2.2.1 | 2.2.1-tuxcare.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-v2p6-4mp7-3r9v is a vulnerability with no CVSS score yet in underscore.string, published June 14, 2019. No source lists public exploit code. Fixed in underscore.string 3.3.5.