`CVE-2024-22871` Clojure

Affected software	Clojure
Severity	7.5 High CVSS 3.1
Fixed in	`1.11.2`, `1.12.0-alpha9`
Weakness	Deserialization of untrusted data (CWE-502)
Published	29 Feb 2024
Updated	13 Nov 2026

Description

An issue in Clojure versions 1.20 to 1.12.0-alpha5 allows an attacker to cause a denial of service (DoS) via the clojure.core$partial$fn__5920 function.

Exploitation status

Proof of concept only

A proof of concept exists, but no reviewed exploit catalogue lists this CVE.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment exploitation: poc CISA recorded that an exploit has been demonstrated. Automatable: yes, technical impact: partial.
Indexed PoC none indexed
EPSS 1.5% chance in 30 days

Waratek protection

Mitigation candidate

A kind of vulnerability Waratek's rules address, with exploit code published or exploitation reported. No rule exists and none is planned yet. The decision below says what we found to build a rule from.

Protection none
Action feasible
Review human Researcher
Record active

Decided by	A researcher's recorded decision for this specific CVE
Finding	A researcher set this CVE's status to Mitigation candidate.

Decided by

A researcher's recorded decision for this specific CVE

Finding

A researcher set this CVE's status to Mitigation candidate.

Waratek research note

written 2026-11-13

Written by a Waratek engineer who reviewed this CVE. Their decision sets the status above, ahead of every automated rule except a withdrawal.

Comments

Deserialization DoS: ASeq.hashCode() walks an infinite Cycle/Iterate/Repeat seq while HashMap.readObject() rehashes keys, hanging the thread. The impact is availability-only (C:N/I:N/A:H) with no gadget chain and no exec sink, so the Marshal RCE pair does not apply, and the payload is far too small to trip the DoS rule's stream-size heuristic. Upstream fix is a three-class hashCode()/hasheq() override.

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.clojure:clojure 1.7.0 1.11.2 unbounded

org.clojure:clojure 1.12.0-alpha1 1.12.0-alpha9 unbounded

Package	Introduced	Fixed	Last affected
`org.clojure:clojure`	1.7.0	`1.11.2`	unbounded
`org.clojure:clojure`	1.12.0-alpha1	`1.12.0-alpha9`	unbounded

Products and versions

3 products, 14 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	clojure	clojure	generic	≥ 1.2.0 and ＜ 1.11.2 · 1.12.0:alpha1 · 1.12.0:alpha2 · 1.12.0:alpha3 · 1.12.0:alpha4 · 1.12.0:alpha5 · 1.12.0:alpha6 · 1.12.0:alpha7 · 1.12.0:alpha8
nvd	fedoraproject	fedora	generic	38 · 39 · 40
osv	org.clojure	clojure	generic	≥ 1.7.0 and ＜ 1.11.2 · ≥ 1.12.0 and ＜ 1.12.0

Source

Vendor

Product

Scheme

Affected versions

nvd

clojure

generic

≥ 1.2.0 and ＜ 1.11.2 · 1.12.0:alpha1 · 1.12.0:alpha2 · 1.12.0:alpha3 · 1.12.0:alpha4 · 1.12.0:alpha5 · 1.12.0:alpha6 · 1.12.0:alpha7 · 1.12.0:alpha8

nvd

fedoraproject

fedora

generic

38 · 39 · 40

osv

org.clojure

clojure

generic

≥ 1.7.0 and ＜ 1.11.2 · ≥ 1.12.0 and ＜ 1.12.0

References

URL	Tags
https://clojure.atlassian.net/browse/CLJ-2839	WEB
https://github.com/clojure/clojure	PACKAGE
https://hackmd.io/%40fe1w0/rymmJGida	WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25FKUOYXQZGGJMFUM5HJABWMIX2TILRV	WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SWWK2SO2MH4SXPO6L444MM6LHVLVFULV	WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YFPGUDXMW6OXKIDGCOZFEAXO74VQIB2T	WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/25FKUOYXQZGGJMFUM5HJABWMIX2TILRV	WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SWWK2SO2MH4SXPO6L444MM6LHVLVFULV	WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YFPGUDXMW6OXKIDGCOZFEAXO74VQIB2T	WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25FKUOYXQZGGJMFUM5HJABWMIX2TILRV/	Third Party Advisory

URL

Timeline

Published	2024-02-29	By the CVE Program.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.
Classification created	2026-11-13	First commit adding this CVE's research note.
Last VRT activity	2026-11-13	Most recent commit touching this CVE's classification, patch or rule file.

Published

2024-02-29

By the CVE Program.

NVD record modified

2026-06-17

NVD's own last-modified date for this record.

Classification created

2026-11-13

First commit adding this CVE's research note.

Last VRT activity

2026-11-13

Most recent commit touching this CVE's classification, patch or rule file.

How VRT decided (4 of 24 rules ran)

4 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification decided it matched Mitigation candidate A researcher set this CVE's status to Mitigation candidate.

5 manual classification not reached Manual classification of this CVE in the legacy dataset

6 non-java-upstream not reached A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component not reached The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side not reached Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven not reached An OSV.dev record of this CVE affecting a package published to Maven Central. When every such package is one business applications do not use (Minecraft mods and launchers, Fastjson) and no tracked product is named by CPE, it settles the CVE as Outside Waratek scope instead

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint not reached A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven not reached The affected package being open source on Maven, so the fix can be read

19 poc-derivable not reached An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit not reached Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match not reached A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc not reached Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold not reached Medium or Low severity, no CISA or VulnCheck KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

24 no-exploit-published not reached Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

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