plone.app.dexterity is a content-type system for the Plone content management system, and plone.app.contenttypes provides Plone’s Dexterity-based content types. Plone.app.dexterity versions through 3.2.2, 4.0.0 through 4.1.2, and 5.0.0, and plone.app.contenttypes versions through 3.0.11, 4.0.0 through 4.0.9, and 5.0.0 are vulnerable to denial of service because an authenticated user can create content with excessively long titles, descriptions, or uploaded-file names, causing Plone to become unresponsive and potentially making the resulting content difficult to edit or delete. The vulnerability is patched in plone.app.dexterity versions 3.2.3, 4.1.3, and 5.0.1, and in plone.app.contenttypes versions 3.0.12, 4.0.10, and 5.0.1.
CVE-2026-57576
MEDIUMPre-NVD 6.56.5—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.8%, top 46% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.5Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EG Risk
- 34(Track)EG Risk 34/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity65% × 45%Exploitation1% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 54%
- KEV
- Not listed
Published
September 22, 2026
Last Modified
September 23, 2026
Advisory Details (10)
Auto-updated Sep 22, 2026Patch available. Sources: github, github_commit.
github_commit
commit cbcef731c088 (plone/plone.app.dexterity)
Fix landed in plone/plone.app.dexterity commit cbcef731c088 — awaiting tagged release
https://github.com/plone/plone.app.dexterity/commit/cbcef731c0882146b9bf30688cdc639d879878fbgithub_commit
commit 411689047f9a (plone/plone.app.dexterity)
Fix landed in plone/plone.app.dexterity commit 411689047f9a — awaiting tagged release
https://github.com/plone/plone.app.dexterity/commit/411689047f9a3521899ae6992a9b0efbd0592a8fgithub_commit
commit 2fdceb120ca8 (plone/plone.app.dexterity)
Fix landed in plone/plone.app.dexterity commit 2fdceb120ca8 — awaiting tagged release
https://github.com/plone/plone.app.dexterity/commit/2fdceb120ca86682a408f3a14753cfcf5126d9d9github_commit
commit 0d317df66382 (plone/plone.app.dexterity)
Fix landed in plone/plone.app.dexterity commit 0d317df66382 — awaiting tagged release
https://github.com/plone/plone.app.dexterity/commit/0d317df663823445200d0569a66a95b7e4a9c50dgithub Patch Available
Denial of Service in File Upload due to excessive filename length · Advisory · plone/plone.app.contenttypes · GitHub
https://github.com/plone/plone.app.contenttypes/security/advisories/GHSA-8pcw-h6w9-h46ggithub_commit
commit bed1547d4f8b (plone/plone.app.contenttypes)
Fix landed in plone/plone.app.contenttypes commit bed1547d4f8b — awaiting tagged release
https://github.com/plone/plone.app.contenttypes/commit/bed1547d4f8b1fc995f2c76f30ba5f20276a8ad6github_commit
commit 7bb03e8ec6c6 (plone/plone.app.contenttypes)
Fix landed in plone/plone.app.contenttypes commit 7bb03e8ec6c6 — awaiting tagged release
https://github.com/plone/plone.app.contenttypes/commit/7bb03e8ec6c6bd0e645f445b0755e85a51afb158github_commit
commit 639c0619f371 (plone/plone.app.contenttypes)
Fix landed in plone/plone.app.contenttypes commit 639c0619f371 — awaiting tagged release
https://github.com/plone/plone.app.contenttypes/commit/639c0619f371df578e69ec94e5ca98e60fd6ed58github_commit
commit 21bae6ebe424 (plone/plone.app.contenttypes)
Fix landed in plone/plone.app.contenttypes commit 21bae6ebe424 — awaiting tagged release
https://github.com/plone/plone.app.contenttypes/commit/21bae6ebe424689eeac9a5884fc0da35f4944e63github_commit
commit 13dc98a57834 (plone/plone.app.contenttypes)
Fix landed in plone/plone.app.contenttypes commit 13dc98a57834 — awaiting tagged release
https://github.com/plone/plone.app.contenttypes/commit/13dc98a578341aac24a1e65fd9bc7ac8a07d168aVendor Advisories for CVE-2026-57576(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-23 18:20 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescore
- 2026-09-22 23:26 UTCEG score recompute
- 2026-09-22 23:14 UTCEG score recompute
- 2026-09-22 23:12 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-57576?
CVE-2026-57576 is a medium vulnerability published on September 22, 2026. plone.app.dexterity is a content-type system for the Plone content management system, and plone.app.contenttypes provides Plone’s Dexterity-based content types. Plone.app.dexterity versions through 3.2.2, 4.0.0 through 4.1.2, and 5.0.0, and plone.app.contenttypes versions through 3.0.11, 4.0.0…
When was CVE-2026-57576 disclosed?
CVE-2026-57576 was first published in the National Vulnerability Database on September 22, 2026, with the most recent update on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57576 actively exploited?
CVE-2026-57576 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 46.1% of all scored CVEs.
What is the CVSS score of CVE-2026-57576?
CVE-2026-57576 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-57576?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57576, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-57576
Is Your Infrastructure Affected by CVE-2026-57576?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.