CVE-2021-39899

LOWNVD 2.92.9—
EchelonGraph scoreMEDIUM confidence

This low-severity CVE scores 2.9 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 78% 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
2.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 2.9Exploit: NoneExposed: 0

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

In all versions of GitLab CE/EE, an attacker with physical access to a user’s machine may brute force the user’s password via the change password function. There is a rate limit in place, but the attack may still be conducted by stealing the session id from the physical compromise of the account and splitting the attack over several IP addresses and passing in the compromised session value from these various locations.

CVSS v3
2.9
EG Score
2.9(medium)
EPSS
16.4%
KEV
Not listed

Published

October 4, 2021

Last Modified

November 21, 2024

References (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 105 total refreshes for this CVE.

  1. 2026-07-22 14:06 UTCEPSS rescore
  2. 2026-07-21 15:22 UTCEPSS rescore
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  7. 2026-07-18 10:59 UTCOSV refresh
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  1. 2026-07-06 16:25 UTCEPSS rescore
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  10. 2026-06-30 23:20 UTCEPSS rescore
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  12. 2026-06-30 12:00 UTCOSV refresh
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  43. 2026-06-12 23:10 UTCEPSS rescore
  44. 2026-06-12 20:10 UTCOSV refresh
  45. 2026-06-11 13:58 UTCEPSS rescore
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  47. 2026-06-10 22:16 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2021-39899?
CVE-2021-39899 is a low vulnerability published on October 4, 2021. In all versions of GitLab CE/EE, an attacker with physical access to a user’s machine may brute force the user’s password via the change password function. There is a rate limit in place, but the attack may still be conducted by stealing the session id from the physical compromise of the account…
When was CVE-2021-39899 disclosed?
CVE-2021-39899 was first published in the National Vulnerability Database on October 4, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-39899 actively exploited?
CVE-2021-39899 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 16.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-39899?
CVE-2021-39899 has a CVSS v3 base score of 2.9 (NVD).
How do I remediate CVE-2021-39899?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-39899, 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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