qs's arrayLimit bypass in comma parsing allows denial of service

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-2391 · CVE overview and exploitation status

EUVD-2026-6720

GHSA-w7fw-mjwx-w883

cve-program · CVE-2026-2391

• https://github.com/ljharb/qs/security/advisories/GHSA-w7fw-mjwx-w883
• https://github.com/ljharb/qs/commit/f6a7abff1f13d644db9b05fe4f2c98ada6bf8482

euvd · EUVD-2026-6720

• https://github.com/ljharb/qs/security/advisories/GHSA-w7fw-mjwx-w883
• https://github.com/ljharb/qs/commit/f6a7abff1f13d644db9b05fe4f2c98ada6bf8482

nvd · CVE-2026-2391

• https://github.com/ljharb/qs/commit/f6a7abff1f13d644db9b05fe4f2c98ada6bf8482
• https://github.com/ljharb/qs/security/advisories/GHSA-w7fw-mjwx-w883

osv · GHSA-w7fw-mjwx-w883

• https://github.com/ljharb/qs/security/advisories/GHSA-w7fw-mjwx-w883
• https://nvd.nist.gov/vuln/detail/CVE-2026-2391
• https://github.com/ljharb/qs/commit/f6a7abff1f13d644db9b05fe4f2c98ada6bf8482
• https://github.com/ljharb/qs

• ### Summary · Advisory content revised · 15 Nov 2026
• ### Summary · Advisory content revised · 5 Nov 2026