CVE-2022-29779: Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the function njs_value_own_enumerate at

Routine

MEDIUM 5.5WATCHLISTDOWNGRADE

CVE-2022-29779 is a medium-severity flaw (CVSS 5.5) affecting njs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Published	2022-06-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nginx

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-06-02 14:15 UTCPublished CVE record published
2026-06-17 04:40 UTCUpdated Record last modified

nginx njs DOWNGRADE

Affected: 0.7.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.7.2

1. Check installed version

apt-cache policy njs || rpm -q njs || njs --version

2. No fixed release: DOWNGRADE to a release before 0.7.2 (Debian / Ubuntu)

apt-cache madison njs sudo apt install njs=<VERSION_BEFORE_0.7.2> sudo apt-mark hold njs

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list njs sudo dnf downgrade njs-<VERSION_BEFORE_0.7.2> sudo dnf versionlock add njs

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-29779?

njs: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-29779 being exploited?

CVE-2022-29779 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-29779 affect?

CVE-2022-29779 affects njs. Severity is medium (CVSS 5.5). Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the function njs_value_own_enumerate at src/njs_value.c.

How urgent is CVE-2022-29779?

Priority 38/100. Public exploit reference; On your watchlist

Software pages

nginx vulnerabilities

Related CVEs

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CVE-2023-27730 HIGH 7.5 DOWNGRADE Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function njs_lvlhsh_find at src/n
CVE-2023-27729 HIGH 7.5 DOWNGRADE Nginx NJS v0.7.10 was discovered to contain an illegal memcpy via the function njs_vmcode_return at src/njs_vm
CVE-2023-27728 HIGH 7.5 DOWNGRADE Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function njs_dump_is_recursive at
CVE-2023-27727 HIGH 7.5 DOWNGRADE Nginx NJS v0.7.10 was discovered to contain a segmentation violation via the function njs_function_frame at sr

References

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