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.

Published: 2022-03-10 Last update: 2026-03-30 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-26652 is rated Moderate Risk (51.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.68%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-26652

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-04 0.44% 0.68% +0.25%
2 2026-03-01 0.68% 0.44% -0.25%
3 2026-02-04 — 0.68% —

Full EPSS history (32 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-26652

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2022-26652

GitHub Security Advisory for CVE-2022-26652

GHSA-6h3m-36w8-hv68 · Severity: high · Ecosystem: go — Arbitrary file write in nats-server

OS Trackers for CVE-2022-26652

vendor priority summary link
debian unimportant CVE-2022-26652 unimportant priority: Debian including 1 source packages (nats-server), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2022-26652

Affected software / configurations for CVE-2022-26652

Vendor Product Version Raw CPE
linuxfoundation nats-server >= 2.2.0, < 2.7.4 cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*
nats nats_streaming_server >= 0.15.0, < 0.24.3 cpe:2.3:a:nats:nats_streaming_server:*:*:*:*:*:*:*:*

References for CVE-2022-26652

cvelogic Threat Intelligence