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CVE-2022-26652

22
FAUCET Score

CVE-2022-26652 identifies a directory traversal vulnerability with write access in NATS nats-server before version 2.7.4 and nats-streaming-server before 0.24.3. This flaw allows an authenticated attacker to write arbitrary files outside the intended directory by manipulating elements within a ZIP archive used for JetStream streams. Rated with a CVSS score of 6.5 (Medium), the vulnerability has a network attack vector and low attack complexity, requiring low privileges and no user interaction, with a primary impact on data integrity. There is currently no evidence of active exploitation, public exploit code is unavailable, and community discussion or media coverage is minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.2.0, < 2.7.4CPE matchmatch criteria
cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*
>= 0.15.0, < 0.24.3CPE matchmatch criteria
cpe:2.3:a:nats:nats_streaming_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.31%
Probability of exploitation in next 30 days
EPSS Percentile
81.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0231 is in the 93rd percentile among its peer group of 21,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

gopatch availablevia ghsa
Product: github.com/nats-io/nats-server/v2Fixed in: 2.7.4
gopatch availablevia ghsa
Product: github.com/nats-io/nats-streaming-serverFixed in: 0.24.3

Vendor Advisories (1)

goGHSA-6h3m-36w8-hv68high

Arbitrary file write in nats-server

Mar 10, 2022

References

advisories.nats.io / CVE/CVE-2022-26652.txt
Vendor Advisory
github.com / nats-io/nats-server/releases
Release NotesThird Party Advisory
github.com / nats-io/nats-server/security/advisories/GHSA-6h3m-36w8-hv68
Third Party Advisory
openwall.com / lists/oss-security/2022/03/10/1
Mailing ListThird Party Advisory