CVE-2023-0921

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2023-06-06. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
4.3
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 84%
CISA-KEV: Not listedEPSS: 84%CVSS: 4.3Exploit: NoneExposed: 0

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

A lack of length validation in GitLab CE/EE affecting all versions from 8.3 before 15.10.8, 15.11 before 15.11.7, and 16.0 before 16.0.2 allows an authenticated attacker to create a large Issue description via GraphQL which, when repeatedly requested, saturates CPU usage.

CVSS v3
4.3
EG Score
4.3(medium)
EPSS
99.7%
KEV
Not listed

Published

June 6, 2023

Last Modified

May 5, 2025

References (6)

Vendor Advisories for CVE-2023-0921(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 3× in last 7d / 24× 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.

  1. 2026-07-06 16:25 UTCEPSS rescore
  2. 2026-07-04 06:29 UTCEPSS rescore
  3. 2026-07-01 15:04 UTCEPSS rescore
  4. 2026-06-27 19:04 UTCOSV refresh
  5. 2026-06-27 03:07 UTCEPSS rescore
  6. 2026-06-27 03:07 UTCEPSS rescore
  7. 2026-06-23 21:31 UTCEPSS rescore
  8. 2026-06-23 21:31 UTCEPSS rescore
  9. 2026-06-17 17:51 UTCEPSS rescore
  10. 2026-06-17 17:51 UTCEPSS rescore
  11. 2026-06-15 17:47 UTCEPSS rescore
  12. 2026-06-14 23:16 UTCEPSS rescore
  13. 2026-06-13 22:59 UTCEPSS rescore
  14. 2026-06-12 23:10 UTCEPSS rescore
  15. 2026-06-12 23:10 UTCEPSS rescore
  16. 2026-06-11 13:58 UTCEPSS rescore
  17. 2026-06-11 13:58 UTCEPSS rescore
  18. 2026-06-10 13:21 UTCEPSS rescore
  19. 2026-06-10 13:21 UTCEPSS rescore
  20. 2026-06-10 05:47 UTCOSV refresh
  21. 2026-06-08 14:15 UTCEPSS rescore
  22. 2026-06-08 14:15 UTCEPSS rescore
  23. 2026-06-07 15:23 UTCEPSS rescore
  24. 2026-06-07 15:23 UTCEPSS rescore
  25. 2026-06-06 13:46 UTCEPSS rescore
Show 27 more
  1. 2026-06-06 13:46 UTCEPSS rescore
  2. 2026-06-05 22:46 UTCEPSS rescore
  3. 2026-06-05 22:46 UTCEPSS rescore
  4. 2026-06-05 06:09 UTCEPSS rescore
  5. 2026-06-05 06:09 UTCEPSS rescore
  6. 2026-06-04 13:11 UTCEPSS rescore
  7. 2026-06-02 20:12 UTCEPSS rescore
  8. 2026-06-02 20:12 UTCEPSS rescore
  9. 2026-06-01 13:50 UTCEPSS rescore
  10. 2026-06-01 13:50 UTCEPSS rescore
  11. 2026-05-31 22:29 UTCEPSS rescore
  12. 2026-05-31 22:29 UTCEPSS rescore
  13. 2026-05-31 00:15 UTCEPSS rescore
  14. 2026-05-31 00:15 UTCEPSS rescore
  15. 2026-05-29 13:43 UTCEPSS rescore
  16. 2026-05-28 13:43 UTCEPSS rescore
  17. 2026-05-28 13:43 UTCEPSS rescore
  18. 2026-05-27 13:39 UTCEPSS rescore
  19. 2026-05-27 13:39 UTCEPSS rescore
  20. 2026-05-26 13:43 UTCEPSS rescore
  21. 2026-05-26 13:43 UTCEPSS rescore
  22. 2026-05-26 13:43 UTCEPSS rescore
  23. 2026-05-26 07:17 UTCEPSS rescore
  24. 2026-05-26 07:17 UTCEPSS rescore
  25. 2026-05-26 07:17 UTCEPSS rescore
  26. 2026-05-24 23:53 UTCEG score recompute
  27. 2026-05-24 23:53 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-0921?
CVE-2023-0921 is a medium vulnerability published on June 6, 2023. A lack of length validation in GitLab CE/EE affecting all versions from 8.3 before 15.10.8, 15.11 before 15.11.7, and 16.0 before 16.0.2 allows an authenticated attacker to create a large Issue description via GraphQL which, when repeatedly requested, saturates CPU usage.
When was CVE-2023-0921 disclosed?
CVE-2023-0921 was first published in the National Vulnerability Database on June 6, 2023, with the most recent update on May 5, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-0921 actively exploited?
CVE-2023-0921 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-0921?
CVE-2023-0921 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2023-0921?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-0921, 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

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