CVE-2021-20848

MEDIUMNVD 6.16.1—

6.1

Cross-site scripting vulnerability in rwtxt versions prior to v1.8.6 allows a remote attacker to inject an arbitrary script via unspecified vectors.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 54.9%
KEV: Not listed

Published

November 24, 2021

Last Modified

November 21, 2024

References (4)

vultures@jpcerthttps://github.com/schollz/rwtxt
vultures@jpcerthttps://jvn.jp/en/jp/JVN22515597/index.html
af854a3a-2127-422b-91ae-364da2661108https://github.com/schollz/rwtxt
af854a3a-2127-422b-91ae-364da2661108https://jvn.jp/en/jp/JVN22515597/index.html

Affected Packages

(1 across 1 ecosystem)

Go(1)

Package	Vulnerable range	Fixed in	Dependents
github.com/schollz/rwtxt	—	1.8.6	—

Weakness Classification(1)

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

CWE-79Cross-site Scripting (XSS)

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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.

2026-05-27 13:39 UTCepss_batch
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
2026-05-26 07:09 UTCEG score recompute
2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-20848?

CVE-2021-20848 is a medium vulnerability published on November 24, 2021. Cross-site scripting vulnerability in rwtxt versions prior to v1.8.6 allows a remote attacker to inject an arbitrary script via unspecified vectors.

When was CVE-2021-20848 disclosed?

CVE-2021-20848 was first published in the National Vulnerability Database on November 24, 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-2021-20848 actively exploited?

CVE-2021-20848 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 54.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-20848?

CVE-2021-20848 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2021-20848?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-20848, 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-2021-20848

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Is Your Infrastructure Affected by CVE-2021-20848?

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