CVE-2020-13562

HIGHNVD 6.18.6▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.6 because EPSS predicts 78% probability of exploitation within the next 30 days (top 0.5% of all CVEs). NVD baseline CVSS 6.1 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Elevated
8.6EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 78%
CISA-KEV: Not listedEPSS PROB: 78%CVSS: 6.1Exploit: Elevated riskExposed: 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 vulnaerability in the phpGACL template action parameter.

CVSS v3
6.1
EG Score
8.6(high)
EG Risk
74(Track)
EG Risk 74/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation78% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
78%
EPSS %ILE
100%
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 9× in last 7d / 24× 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. 2026-07-26 14:51 UTCEPSS rescore
  2. 2026-07-25 14:14 UTCEPSS rescore
  3. 2026-07-24 14:14 UTCEPSS rescore
  4. 2026-07-23 01:49 UTCEG score recompute▲ 2.50
  5. 2026-07-22 22:34 UTCEG score recompute
  6. 2026-07-22 14:05 UTCEPSS rescore
  7. 2026-07-21 15:22 UTCEPSS rescore
  8. 2026-07-21 15:22 UTCEPSS rescore
  9. 2026-07-20 17:04 UTCEPSS rescore
  10. 2026-07-19 14:28 UTCEPSS rescore
  11. 2026-07-19 14:28 UTCEPSS rescore
  12. 2026-07-19 02:52 UTCOSV refresh
  13. 2026-07-19 02:26 UTCEPSS rescore
  14. 2026-07-19 02:26 UTCEPSS rescore
  15. 2026-07-15 16:55 UTCEPSS rescore
  16. 2026-07-12 05:44 UTCEPSS rescore
  17. 2026-07-09 19:06 UTCEPSS rescore
  18. 2026-07-06 16:25 UTCEPSS rescore
  19. 2026-07-06 16:25 UTCEPSS rescore
  20. 2026-07-06 02:20 UTCEPSS rescore
  21. 2026-07-05 02:27 UTCEPSS rescore
  22. 2026-07-01 15:03 UTCEPSS rescore
  23. 2026-07-01 15:03 UTCEPSS rescore
  24. 2026-07-01 09:48 UTCOSV refresh
  25. 2026-06-27 03:06 UTCEPSS rescore
Show 36 more
  1. 2026-06-25 13:47 UTCEPSS rescore
  2. 2026-06-25 13:47 UTCEPSS rescore
  3. 2026-06-23 21:31 UTCEPSS rescore
  4. 2026-06-23 21:31 UTCEPSS rescore
  5. 2026-06-17 17:50 UTCEPSS rescore
  6. 2026-06-17 17:50 UTCEPSS rescore
  7. 2026-06-16 17:50 UTCEPSS rescore
  8. 2026-06-16 17:50 UTCEPSS rescore
  9. 2026-06-15 17:46 UTCEPSS rescore
  10. 2026-06-14 23:15 UTCEPSS rescore
  11. 2026-06-14 23:15 UTCEPSS rescore
  12. 2026-06-13 22:58 UTCEPSS rescore
  13. 2026-06-13 22:58 UTCEPSS rescore
  14. 2026-06-13 15:13 UTCOSV refresh
  15. 2026-06-12 23:09 UTCEPSS rescore
  16. 2026-06-11 13:58 UTCEPSS rescore
  17. 2026-06-10 22:16 UTCEPSS rescore
  18. 2026-06-10 22:16 UTCEPSS rescore
  19. 2026-06-08 14:15 UTCEPSS rescore
  20. 2026-06-08 14:15 UTCEPSS rescore
  21. 2026-06-06 13:45 UTCEPSS rescore
  22. 2026-06-06 13:45 UTCEPSS rescore
  23. 2026-06-06 13:45 UTCEPSS rescore
  24. 2026-06-05 22:45 UTCEPSS rescore
  25. 2026-06-05 22:45 UTCEPSS rescore
  26. 2026-06-05 06:08 UTCEPSS rescore
  27. 2026-06-04 13:10 UTCEPSS rescore
  28. 2026-06-04 13:10 UTCEPSS rescore
  29. 2026-06-01 13:50 UTCEPSS rescore
  30. 2026-05-31 00:15 UTCEPSS rescore
  31. 2026-05-31 00:14 UTCEPSS rescore
  32. 2026-05-29 13:42 UTCEPSS rescore
  33. 2026-05-29 13:42 UTCEPSS rescore
  34. 2026-05-27 13:39 UTCEPSS rescore
  35. 2026-05-26 21:27 UTCEG score recompute
  36. 2026-05-26 21:27 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2020-13562?
CVE-2020-13562 is a high 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 vulnaerability in the phpGACL template action parameter.
When was CVE-2020-13562 disclosed?
CVE-2020-13562 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-2020-13562 actively exploited?
CVE-2020-13562 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 78% probability of exploitation in the next 30 days, which ranks it in the top 0.5% of all scored CVEs.
What is the CVSS score of CVE-2020-13562?
CVE-2020-13562 has a CVSS v3 base score of 6.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.6.
How do I remediate CVE-2020-13562?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-13562, 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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