TI-2020-13678 Aliases CVE-2020-19695 GHSA-9m49-j2g8-82x8

Buffer Overflow found in Nginx NJS allows a remote attacker to execute arbitrary code via…

HIGH 82CWE-120Published 2023-04-04 · Updated 2025-02-14

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

Buffer Overflow found in Nginx NJS allows a remote attacker to execute arbitrary code via the njs_object_property parameter of the njs/njs_vm.c function.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01333 71st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:f5:njs::::::::	before 0.3.4	Vulnerable	F5

cpe:2.3:a:f5:njs:*:*:*:*:*:*:*:* Versions before 0.3.4 Vulnerable ·F5

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-19695
2026-10-03 Alias added: GHSA-9m49-j2g8-82x8

References

Exploit 1

https://github.com/nginx/njs/issues/188

TI-2022-21129 Nginx NJS v0.7.2 was discovered to contain a heap-use-after-free bug caused by illegal… CVSS 3.1CRITICAL 9.8
TI-2020-13676 Buffer Overflow vulnerabilty found in Nginx NJS v.0feca92 allows a remote attacker to… CVSS 3.1CRITICAL 9.8
TI-2023-12380 Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function… CVSS 3.1HIGH 7.5
TI-2023-12378 Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function… CVSS 3.1HIGH 7.5
TI-2023-12377 Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function… CVSS 3.1HIGH 7.5
TI-2022-21128 Nginx NJS v0.7.4 was discovered to contain a segmentation violation in… CVSS 3.1HIGH 7.5

See all 39 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences