No exploitation reportedFix available

CVE-2022-26652

Q: Is CVE-2022-26652 actively exploited?

Active exploitation of CVE-2022-26652 has not been confirmed. Its EPSS score was 2.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-26652?

CVE-2022-26652 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

No exploitation reported by the sources we read.

Published2022-03-10
WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

NATS nats-server before 2.7.4 allows Directory Traversal (with write access) via an element in a ZIP archive for JetStream streams. nats-streaming-server before 0.24.3 is also affected.

Timeline

dates in UTC

2022-03-1017:47CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-26652?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-26652?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD

nats-io/nats-server

Branch	Affected	Fixed in	Source
—	all versions	no fix published	OSV

Linuxfoundation nats-server

Branch	Affected	Fixed in	Source
2.x	≥ 2.2.0, < 2.7.4	2.7.4	NVD · OSV

Nats nats streaming server

Branch	Affected	Fixed in	Source
0.x	≥ 0.15.0, < 0.24.3	0.24.3	NVD · OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

advisories.nats.ioVendor Advisory
github.comRelease Notes

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.16.5read 2026-10-23
NVDCVSS 2.04read 2026-10-23
NVDweakness (CWE)CWE-22read 2026-10-23
FIRST EPSSEPSS score2.3 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Published: 2022-03-10
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-26652?

NATS nats-server before 2.7.4 allows Directory Traversal (with write access) via an element in a ZIP archive for JetStream streams. nats-streaming-server before 0.24.3 is also affected.

Is CVE-2022-26652 actively exploited?

Active exploitation of CVE-2022-26652 has not been confirmed. Its EPSS score was 2.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-26652?

CVE-2022-26652 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

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