CVE-2022-26652Network attack vector

Arbitrary file write via unsanitized restore paths

Published Mar 10, 2022 · Updated Aug 3, 2024

Path traversal in NATS Server before 2.7.4 and NATS Streaming Server before 0.24.3 allows remote authenticated users to write files. During JetStream stream restore, the server extracts tar entries without adequately sanitizing filenames, allowing traversal outside the intended storage directory to an attacker-chosen path. The attacker needs a NATS account authorized for the JetStream API, while process sandboxing bounds the writable locations.

CVSS severity6.5
Medium
EPSS probability2.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in NATS Server before 2.7.4 and NATS Streaming Server before 0.24.3 allows remote authenticated users to write files. During JetStream stream restore, the server extracts tar entries without adequately sanitizing filenames, allowing traversal outside the intended storage directory to an attacker-chosen path. The attacker needs a NATS account authorized for the JetStream API, while process sandboxing bounds the writable locations.

The record

CVE
CVE-2022-26652
Published
Mar 10, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, CWE-26, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
4.0NVDAV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-26Path Traversal: '/dir/../filename'
T1105Ingress Tool Transfer

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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