CVE-2020-13563

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
6.1
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 76%
CISA-KEV: Not listedEPSS: 76%CVSS: 6.1Exploit: NoneExposed: 0

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

A cross-site scripting vulnerability exists in the template functionality of phpGACL 3.3.7. A specially crafted HTTP request can lead to arbitrary JavaScript execution. An attacker can provide a crafted URL to trigger this vulnerability in the phpGACL template group_id parameter.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
—
EPSS
99.5%
KEV
Not listed

Published

February 1, 2021

Last Modified

November 21, 2024

References (2)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 28× 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 22:34 UTCEG score recompute
  2. 2026-07-22 14:05 UTCEPSS rescore
  3. 2026-07-21 15:22 UTCEPSS rescore
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  6. 2026-07-19 14:28 UTCEPSS rescore
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  8. 2026-07-19 02:52 UTCOSV refresh
  9. 2026-07-19 02:26 UTCEPSS rescore
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  11. 2026-07-18 10:02 UTCEPSS rescore
  12. 2026-07-16 16:59 UTCEPSS rescore
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  14. 2026-07-15 16:55 UTCEPSS rescore
  15. 2026-07-13 06:10 UTCEPSS rescore
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  20. 2026-07-01 15:03 UTCEPSS rescore
  21. 2026-07-01 15:03 UTCEPSS rescore
  22. 2026-07-01 09:48 UTCOSV refresh
  23. 2026-06-28 04:54 UTCEPSS rescore
  24. 2026-06-28 04:54 UTCEPSS rescore
  25. 2026-06-25 13:47 UTCEPSS rescore
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  1. 2026-06-25 13:47 UTCEPSS rescore
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  4. 2026-06-21 14:54 UTCEPSS rescore
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  6. 2026-06-21 01:57 UTCEPSS rescore
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  8. 2026-06-17 17:50 UTCEPSS rescore
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  10. 2026-06-15 17:46 UTCEPSS rescore
  11. 2026-06-13 22:58 UTCEPSS rescore
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  13. 2026-06-13 15:13 UTCOSV refresh
  14. 2026-06-12 23:09 UTCEPSS rescore
  15. 2026-06-11 13:58 UTCEPSS rescore
  16. 2026-06-10 22:16 UTCEPSS rescore
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  18. 2026-06-10 13:20 UTCEPSS rescore
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  21. 2026-06-06 13:45 UTCEPSS rescore
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  24. 2026-06-05 22:45 UTCEPSS rescore
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  29. 2026-06-02 20:11 UTCEPSS rescore
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  31. 2026-06-01 13:50 UTCEPSS rescore
  32. 2026-05-31 22:29 UTCEPSS rescore
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  36. 2026-05-29 13:42 UTCEPSS rescore
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  38. 2026-05-28 13:43 UTCEPSS rescore
  39. 2026-05-28 13:43 UTCEPSS rescore
  40. 2026-05-26 21:27 UTCEG score recompute
  41. 2026-05-26 21:27 UTCGHSA enrichment
  42. 2026-05-26 07:17 UTCEPSS rescore
  43. 2026-05-26 07:17 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-13563?
CVE-2020-13563 is a medium vulnerability published on February 1, 2021. A cross-site scripting vulnerability exists in the template functionality of phpGACL 3.3.7. A specially crafted HTTP request can lead to arbitrary JavaScript execution. An attacker can provide a crafted URL to trigger this vulnerability in the phpGACL template group_id parameter.
When was CVE-2020-13563 disclosed?
CVE-2020-13563 was first published in the National Vulnerability Database on February 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-2020-13563 actively exploited?
CVE-2020-13563 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-13563?
CVE-2020-13563 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2020-13563?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-13563, 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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