CVE-2021-3680

MEDIUMNVD 4.94.9—

4.9

showdoc is vulnerable to Missing Cryptographic Step

CVSS v3: 4.9
EG Score: 4.9(medium)
EPSS: 27.2%
KEV: Not listed

Published

August 4, 2021

Last Modified

November 21, 2024

References (4)

security@huntrhttps://github.com/star7th/showdoc/commit/4b962c1740311e0d46775023b6acba39ad60e370
security@huntrhttps://huntr.dev/bounties/76b49607-fba9-4100-9be7-cb459fe6cfe2
af854a3a-2127-422b-91ae-364da2661108https://github.com/star7th/showdoc/commit/4b962c1740311e0d46775023b6acba39ad60e370
af854a3a-2127-422b-91ae-364da2661108https://huntr.dev/bounties/76b49607-fba9-4100-9be7-cb459fe6cfe2

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
composer	showdoc/showdoc	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Packagist(1)

Package	Vulnerable range	Fixed in	Dependents
showdoc/showdoc	v1.0.0 ... v2.9.8 (126 versions)	—	—

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 20× 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
2026-06-01 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 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 12:41 UTCEG score recompute
2026-05-26 12:41 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-3680?

CVE-2021-3680 is a medium vulnerability published on August 4, 2021. showdoc is vulnerable to Missing Cryptographic Step

When was CVE-2021-3680 disclosed?

CVE-2021-3680 was first published in the National Vulnerability Database on August 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-2021-3680 actively exploited?

CVE-2021-3680 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-3680?

CVE-2021-3680 has a CVSS v3 base score of 4.9 (NVD).

How do I remediate CVE-2021-3680?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-3680, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-3680

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CVE-2021-3680

Published

Last Modified

References (4)

Patch Availability(1)

Affected Packages

Weakness Classification(3)

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-3680?

Same product

Same CWE

CVE-2021-3680

📅 Published

🔄 Last Modified

🔗 References (4)

Patch Availability(1)

Affected Packages

Weakness Classification(3)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-3680?

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Frequently asked(5)

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