CVE-2023-41050

HIGHNVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.7 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 59% 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, nvd
7.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.7Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

AccessControl provides a general security framework for use in Zope. Python's "format" functionality allows someone controlling the format string to "read" objects accessible (recursively) via attribute access and subscription from accessible objects. Those attribute accesses and subscriptions use Python's full blown getattr and getitem, not the policy restricted AccessControl variants _getattr_ and _getitem_. This can lead to critical information disclosure. AccessControl already provides a safe variant for str.format and denies access to string.Formatter. However, str.format_map is still unsafe. Affected are all users who allow untrusted users to create AccessControl controlled Python code and execute it. A fix has been introduced in versions 4.4, 5.8 and 6.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS v3
7.7
EG Score
7.7(medium)
EG Risk
—
EPSS
41.0%
KEV
Not listed

Published

September 6, 2023

Last Modified

June 17, 2026

References (4)

Affected Packages

(2 across 1 ecosystem)
PyPI(2)
PackageVulnerable rangeFixed inDependents
accesscontrol6.0, 6.16.2—
zope5.0 ... 5.8.3 (20 versions)5.8.4—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 49× 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.

Showing the most recent 100 of 108 total refreshes for this CVE.

  1. 2026-07-22 23:12 UTCEG score recompute▲ 0.90
  2. 2026-07-22 14:06 UTCEPSS rescore
  3. 2026-07-21 15:23 UTCEPSS rescore
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  1. 2026-07-07 13:44 UTCEPSS rescore
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  22. 2026-06-24 06:21 UTCNVD updateCVSS v3 → 7.7 · severity → HIGH
  23. 2026-06-23 21:31 UTCEPSS rescore
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  50. 2026-06-09 21:17 UTCOSV refresh
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Frequently asked(5)

What is CVE-2023-41050?
CVE-2023-41050 is a high vulnerability published on September 6, 2023. AccessControl provides a general security framework for use in Zope. Python's "format" functionality allows someone controlling the format string to "read" objects accessible (recursively) via attribute access and subscription from accessible objects. Those attribute accesses and subscriptions use…
When was CVE-2023-41050 disclosed?
CVE-2023-41050 was first published in the National Vulnerability Database on September 6, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-41050 actively exploited?
CVE-2023-41050 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-41050?
CVE-2023-41050 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2023-41050?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-41050, 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.

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