CVE-2020-8297

MEDIUMNVD 4.34.3—

4.3

Nextcloud Deck before 1.0.2 suffers from an insecure direct object reference (IDOR) vulnerability that permits users with a duplicate user identifier to access deck data of a previous deleted user.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 46.2%
KEV: Not listed

Published

February 23, 2021

Last Modified

November 21, 2024

References (6)

support@hackeronehttps://github.com/nextcloud/deck/pull/1976
support@hackeronehttps://hackerone.com/reports/882258
support@hackeronehttps://nextcloud.com/security/advisory/?id=NC-SA-2021-007
af854a3a-2127-422b-91ae-364da2661108https://github.com/nextcloud/deck/pull/1976
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/882258
af854a3a-2127-422b-91ae-364da2661108https://nextcloud.com/security/advisory/?id=NC-SA-2021-007

Weakness Classification(1)

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

CWE-639Authorization Bypass Through User-Controlled Key (IDOR)

Data Freshness Timeline

(refreshed 10× in last 7d / 19× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 20:30 UTCEG score recompute
2026-05-26 20:30 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 16:35 UTCOSV refresh

Frequently asked(5)

What is CVE-2020-8297?

CVE-2020-8297 is a medium vulnerability published on February 23, 2021. Nextcloud Deck before 1.0.2 suffers from an insecure direct object reference (IDOR) vulnerability that permits users with a duplicate user identifier to access deck data of a previous deleted user.

When was CVE-2020-8297 disclosed?

CVE-2020-8297 was first published in the National Vulnerability Database on February 23, 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-2020-8297 actively exploited?

CVE-2020-8297 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 46.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-8297?

CVE-2020-8297 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2020-8297?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8297, 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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CVE-2020-8297

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-8297?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)