HOMEVULNERABILITIESCVE-2023-42457
HIGH

CVE-2023-42457

CWE-400Published: September 21, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

plone.rest allows users to use HTTP verbs such as GET, POST, PUT, DELETE, etc. in Plone. Starting in the 2.x branch and prior to versions 2.0.1 and 3.0.1, when the `++api++` traverser is accidentally used multiple times in a url, handling it takes increasingly longer, making the server less responsive. Patches are available in `plone.rest` 2.0.1 and 3.0.1. Series 1.x is not affected. As a workaround, one may redirect `/++api++/++api++` to `/++api++` in one's frontend web server (nginx, Apache).

NVD Source

Technical Analysis

CVE-2023-42457 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

plone1 product(s)
rest
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7
PATCHhttps://github.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302
PATCHhttps://github.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7
PATCHhttps://github.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302
ADVISORYhttp://www.openwall.com/lists/oss-security/2023/09/22/2
ADVISORYhttps://github.com/plone/plone.rest/security/advisories/GHSA-h6rp-mprm-xgcq
ADVISORYhttp://www.openwall.com/lists/oss-security/2023/09/22/2
ADVISORYhttps://github.com/plone/plone.rest/security/advisories/GHSA-h6rp-mprm-xgcq

All References (8)

→
http://www.openwall.com/lists/oss-security/2023/09/22/2Mailing List · Third Party Advisory
→
https://github.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7Patch
→
https://github.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302Patch
→
https://github.com/plone/plone.rest/security/advisories/GHSA-h6rp-mprm-xgcqVendor Advisory
→
http://www.openwall.com/lists/oss-security/2023/09/22/2Mailing List · Third Party Advisory
→
https://github.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7Patch
→
https://github.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302Patch
→
https://github.com/plone/plone.rest/security/advisories/GHSA-h6rp-mprm-xgcqVendor Advisory

Quick Facts

CVE IDCVE-2023-42457
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-400
CISA KEVNo
Affected1 vendor(s)
PublishedSep 21, 2023

Related CVEs (CWE-400)

CVE-2025-24211
9.8
CVE-2025-24247
9.8
CVE-2023-28507
9.8
CVE-2025-24269
9.8
CVE-2025-24190
9.8
CVE-2025-24260
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-42457 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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