CVE-2020-17530

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Trending — 3 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 96%CVSS: 9.8Exploit: NoneExposed: 0

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

Forced OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution. Affected software : Apache Struts 2.0.0 - Struts 2.5.25.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
99.9%
KEV
⚠ Exploited

Published

December 11, 2020

Last Modified

October 27, 2025

Advisory Details (5)

Auto-updated Jun 1, 2026
No patch confirmed yet.
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20210115-0005/
generic

S2-061 - Apache Struts 2 Wiki - Apache Software Foundation

https://cwiki.apache.org/confluence/display/WW/S2-061
generic

oss-security - CVE-2021-31805: Apache Struts: Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE.

http://www.openwall.com/lists/oss-security/2022/04/12/6
generic

Packet Storm

http://packetstormsecurity.com/files/160721/Apache-Struts-2-Forced-Multi-OGNL-Evaluation.html
generic

JVN#43969166: Apache Struts 2 vulnerable to remote code execution (S2-061)

http://jvn.jp/en/jp/JVN43969166/index.html

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.struts:struts2-core2.0.11 ... 2.5.8 (75 versions)2.5.26—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 51× in last 7d / 214× 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.

Showing the most recent 100 of 301 total refreshes for this CVE.

  1. 2026-07-11 23:55 UTCEG score recompute
  2. 2026-07-11 20:14 UTCEG score recompute
  3. 2026-07-11 16:33 UTCEG score recompute
  4. 2026-07-11 12:52 UTCEG score recompute
  5. 2026-07-11 09:11 UTCEG score recompute
  6. 2026-07-11 08:25 UTCEPSS rescore
  7. 2026-07-11 08:25 UTCEPSS rescore
  8. 2026-07-11 05:29 UTCEG score recompute
  9. 2026-07-11 01:47 UTCEG score recompute
  10. 2026-07-10 22:06 UTCEG score recompute
  11. 2026-07-10 18:24 UTCEG score recompute
  12. 2026-07-10 17:52 UTCCISA KEV update
  13. 2026-07-10 14:41 UTCEG score recompute
  14. 2026-07-10 10:59 UTCEG score recompute
  15. 2026-07-10 07:16 UTCEG score recompute
  16. 2026-07-10 03:34 UTCEG score recompute
  17. 2026-07-09 23:52 UTCEG score recompute
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  25. 2026-07-08 18:14 UTCEG score recompute
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  1. 2026-07-08 14:32 UTCEG score recompute
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  5. 2026-07-07 23:45 UTCEG score recompute
  6. 2026-07-07 20:04 UTCEG score recompute
  7. 2026-07-07 19:01 UTCCISA KEV update
  8. 2026-07-07 17:16 UTCCISA KEV update
  9. 2026-07-07 16:22 UTCEG score recompute
  10. 2026-07-07 12:39 UTCEG score recompute
  11. 2026-07-07 08:57 UTCEG score recompute
  12. 2026-07-07 05:15 UTCEG score recompute
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  14. 2026-07-06 21:52 UTCEG score recompute
  15. 2026-07-06 18:09 UTCEG score recompute
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  17. 2026-07-06 10:46 UTCEG score recompute
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  20. 2026-07-05 23:37 UTCEG score recompute
  21. 2026-07-05 19:55 UTCEG score recompute
  22. 2026-07-05 16:14 UTCEG score recompute
  23. 2026-07-05 12:31 UTCEG score recompute
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  25. 2026-07-05 05:07 UTCEG score recompute
  26. 2026-07-05 01:24 UTCEG score recompute
  27. 2026-07-04 21:43 UTCEG score recompute
  28. 2026-07-04 18:02 UTCEG score recompute
  29. 2026-07-04 14:18 UTCEG score recompute
  30. 2026-07-04 10:36 UTCEG score recompute
  31. 2026-07-04 06:53 UTCEG score recompute
  32. 2026-07-04 03:11 UTCEG score recompute
  33. 2026-07-03 23:29 UTCEG score recompute
  34. 2026-07-03 19:48 UTCEG score recompute
  35. 2026-07-03 16:07 UTCEG score recompute
  36. 2026-07-03 12:26 UTCEG score recompute
  37. 2026-07-03 08:43 UTCEG score recompute
  38. 2026-07-03 05:02 UTCEG score recompute
  39. 2026-07-03 01:20 UTCEG score recompute
  40. 2026-07-02 21:39 UTCEG score recompute
  41. 2026-07-02 17:57 UTCEG score recompute
  42. 2026-07-02 14:15 UTCEG score recompute
  43. 2026-07-02 10:34 UTCEG score recompute
  44. 2026-07-02 06:50 UTCEG score recompute
  45. 2026-07-02 03:09 UTCEG score recompute
  46. 2026-07-01 23:27 UTCEG score recompute
  47. 2026-07-01 19:46 UTCEG score recompute
  48. 2026-07-01 19:16 UTCCISA KEV update
  49. 2026-07-01 16:05 UTCEG score recompute
  50. 2026-07-01 12:21 UTCEG score recompute
  51. 2026-07-01 08:40 UTCEG score recompute
  52. 2026-07-01 04:59 UTCEG score recompute
  53. 2026-07-01 01:17 UTCEG score recompute
  54. 2026-06-30 21:36 UTCEG score recompute
  55. 2026-06-30 17:53 UTCEG score recompute
  56. 2026-06-30 14:11 UTCEG score recompute
  57. 2026-06-30 10:29 UTCEG score recompute
  58. 2026-06-30 06:47 UTCEG score recompute
  59. 2026-06-30 03:04 UTCEG score recompute
  60. 2026-06-29 23:21 UTCEG score recompute
  61. 2026-06-29 19:40 UTCEG score recompute
  62. 2026-06-29 19:12 UTCCISA KEV update
  63. 2026-06-29 15:59 UTCEG score recompute
  64. 2026-06-29 12:17 UTCEG score recompute
  65. 2026-06-29 08:36 UTCEG score recompute
  66. 2026-06-29 04:53 UTCEG score recompute
  67. 2026-06-29 01:11 UTCEG score recompute
  68. 2026-06-28 21:30 UTCEG score recompute
  69. 2026-06-28 17:48 UTCEG score recompute
  70. 2026-06-28 14:07 UTCEG score recompute
  71. 2026-06-28 10:25 UTCEG score recompute
  72. 2026-06-28 06:44 UTCEG score recompute
  73. 2026-06-28 03:03 UTCEG score recompute
  74. 2026-06-27 23:22 UTCEG score recompute
  75. 2026-06-27 19:40 UTCEG score recompute

Publicly available exploits

(8 references)

Working exploit code is in the public domain (1 Metasploit module) (6 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCuzzzval/CVE-2020-17530
    First seen Jan 7, 2021
    Open source ↗
  • GitHub PoCCyborgSecurity/CVE-2020-17530
    First seen Dec 30, 2020
    Open source ↗
  • GitHub PoCfengziHK/CVE-2020-17530-strust2-061
    First seen Dec 14, 2020

    CVE-2020-17530-strust2-061

    Open source ↗
  • GitHub PoCAl1ex/CVE-2020-17530
    First seen Dec 13, 2020

    S2-061 CVE-2020-17530

    Open source ↗
  • GitHub PoCwuzuowei/CVE-2020-17530
    First seen Dec 10, 2020

    S2-061 的payload，以及对应简单的PoC/Exp

    Open source ↗
  • GitHub PoCka1n4t/CVE-2020-17530
    First seen Dec 9, 2020
    Open source ↗
  • Metasploitexploit/multi/http/struts2_multi_eval_ognl✓ verified
    First seen Sep 14, 2020

    Apache Struts 2 Forced Multi OGNL Evaluation

    Open source ↗
  • Nucleihttp/cves/2020/CVE-2020-17530.yaml
    First seen Jan 1, 2020

    Apache Struts 2.0.0-2.5.25 - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2020-17530?
CVE-2020-17530 is a critical vulnerability published on December 11, 2020. Forced OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution. Affected software : Apache Struts 2.0.0 - Struts 2.5.25.
When was CVE-2020-17530 disclosed?
CVE-2020-17530 was first published in the National Vulnerability Database on December 11, 2020, with the most recent update on October 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-17530 actively exploited?
Yes. CISA added CVE-2020-17530 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Apache Struts. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-17530?
CVE-2020-17530 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2020-17530?
CVE-2020-17530 affects Apache Struts. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2020-17530?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-17530, 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-2020-17530

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