How severe is CVE-2022-30503?

CVE-2022-30503 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-30503 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-30503?

CVE-2022-30503 affects Nginx Njs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-30503?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-30503 published?

CVE-2022-30503 was published on 2022-06-02 and last updated on 2026-06-17.

CVE-2022-30503

CVE-2022-30503 is a medium-severity vulnerability in Nginx Njs with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Nginx Njs
Published: 2022-06-02
Last modified: 2026-06-17

Description

Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the function njs_set_number at src/njs_value.h.

Frequently asked questions

What is CVE-2022-30503?: Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the function njs_set_number at src/njs_value.h.
How severe is CVE-2022-30503?: CVE-2022-30503 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-30503 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-30503?: CVE-2022-30503 affects Nginx Njs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-30503?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-30503 published?: CVE-2022-30503 was published on 2022-06-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nginx:njs:0.7.2:*:*:*:*:*:*:*

More vulnerabilities in Nginx Njs

CVE-2021-46461 — Critical (CVSS 9.8): njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in…
CVE-2022-35173 — High (CVSS 7.5): An issue was discovered in Nginx NJS v0.7.5. The JUMP offset for a break instruction was not set to a correct offset…
CVE-2022-29780 — Medium (CVSS 5.5): Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the function njs_array_prototype_sort at…
CVE-2022-29779 — Medium (CVSS 5.5): Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the function njs_value_own_enumerate at…

All CVEs affecting Nginx Njs →