CVE-2021-32653

LOWNVD 2.72.7—
EchelonGraph scoreMEDIUM confidence

This low-severity CVE scores 2.7 under NVD CVSS v3. EPSS exploit probability: 1.2%, top 35% 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
Trending — 3 sources updated this week
2.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 2.7Exploit: NoneExposed: 0

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

Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2; no workarounds outside the updates are known to exist.

CVSS v3
2.7
EG Score
2.7(medium)
EG Risk
—
EPSS
65.1%
KEV
Not listed

Published

June 1, 2021

Last Modified

November 21, 2024

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 45× 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. 2026-07-22 22:48 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
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  4. 2026-07-21 15:22 UTCEPSS rescore
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  10. 2026-07-18 19:29 UTCOSV refresh
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  1. 2026-07-06 02:21 UTCEPSS rescore
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  6. 2026-07-01 15:04 UTCEPSS rescore
  7. 2026-07-01 02:18 UTCOSV refresh
  8. 2026-06-30 23:20 UTCEPSS rescore
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  26. 2026-06-19 19:24 UTCEPSS rescore
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  37. 2026-06-13 04:43 UTCOSV refresh
  38. 2026-06-12 23:10 UTCEPSS rescore
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  40. 2026-06-11 13:58 UTCEPSS rescore
  41. 2026-06-10 22:16 UTCEPSS rescore
  42. 2026-06-10 13:20 UTCEPSS rescore
  43. 2026-06-08 14:15 UTCEPSS rescore
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  45. 2026-06-07 15:23 UTCEPSS rescore
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  50. 2026-06-05 22:45 UTCEPSS rescore
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  70. 2026-05-26 15:45 UTCEG score recompute
  71. 2026-05-26 13:42 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2021-32653?
CVE-2021-32653 is a low vulnerability published on June 1, 2021. Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2; no workarounds…
When was CVE-2021-32653 disclosed?
CVE-2021-32653 was first published in the National Vulnerability Database on June 1, 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-2021-32653 actively exploited?
CVE-2021-32653 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-32653?
CVE-2021-32653 has a CVSS v3 base score of 2.7 (NVD).
How do I remediate CVE-2021-32653?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-32653, 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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