CVE-2026-17532

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-08-05. A secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 6.1Exploit: Elevated riskExposed services: Not assessed

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

The Seraphinite Accelerator plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'seraph_accel_prep' parameter in versions up to, and including, 2.29.15. This is due to the CacheExtractPreparePageParams() function using PHP's loose inequality operator (!=) to compare the expected HMAC string against the JSON-decoded 'nonce' value — supplying the JSON boolean true causes any non-empty HMAC string to compare as loosely equal, bypassing the signature check — combined with insufficient output escaping in the _CbContentFinishSkip() function, which concatenates the attacker-controlled 'selfTest' field directly into the HTML response body. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a specially crafted link.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
43
EG Risk 43/100CISA SSVC

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
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.8%
EPSS %ILE
54th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

August 12, 2026

References (9)

Vendor Advisories for CVE-2026-17532(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 63× 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 153 total refreshes for this CVE.

  1. 2026-10-05 17:42 UTCEPSS rescore
  2. 2026-10-04 06:06 UTCEG score recompute
  3. 2026-10-04 06:06 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-02 10:02 UTCEG score recompute
  6. 2026-10-02 10:01 UTCGHSA enrichment
  7. 2026-10-01 19:49 UTCEPSS rescore
  8. 2026-10-01 02:22 UTCEG score recompute
  9. 2026-10-01 02:22 UTCGHSA enrichment
  10. 2026-09-30 15:02 UTCEPSS rescore
  11. 2026-09-29 15:20 UTCEPSS rescore
  12. 2026-09-29 06:21 UTCEG score recompute
  13. 2026-09-29 06:21 UTCGHSA enrichment
  14. 2026-09-28 13:51 UTCEPSS rescore
  15. 2026-09-27 17:48 UTCEG score recompute
  16. 2026-09-27 17:48 UTCGHSA enrichment
  17. 2026-09-27 13:47 UTCEPSS rescore
  18. 2026-09-26 15:58 UTCEPSS rescore
  19. 2026-09-25 04:37 UTCEG score recompute
  20. 2026-09-25 04:37 UTCGHSA enrichment
  21. 2026-09-24 00:21 UTCEG score recompute
  22. 2026-09-24 00:21 UTCGHSA enrichment
  23. 2026-09-23 01:15 UTCEG score recompute
  24. 2026-09-23 01:15 UTCGHSA enrichment
  25. 2026-09-22 02:00 UTCEG score recompute
Show 75 more
  1. 2026-09-22 02:00 UTCGHSA enrichment
  2. 2026-09-20 03:17 UTCEG score recompute
  3. 2026-09-20 03:16 UTCGHSA enrichment
  4. 2026-09-19 03:28 UTCEG score recompute
  5. 2026-09-19 03:28 UTCGHSA enrichment
  6. 2026-09-18 19:27 UTCEPSS rescore
  7. 2026-09-18 02:57 UTCEG score recompute
  8. 2026-09-18 02:57 UTCGHSA enrichment
  9. 2026-09-17 03:51 UTCEG score recompute
  10. 2026-09-17 03:51 UTCGHSA enrichment
  11. 2026-09-16 14:07 UTCEPSS rescore
  12. 2026-09-16 05:14 UTCEPSS rescore
  13. 2026-09-16 03:41 UTCEG score recompute
  14. 2026-09-16 03:41 UTCGHSA enrichment
  15. 2026-09-15 01:33 UTCGHSA enrichment
  16. 2026-09-14 02:05 UTCEG score recompute
  17. 2026-09-14 02:05 UTCGHSA enrichment
  18. 2026-09-13 16:46 UTCEPSS rescore
  19. 2026-09-13 03:00 UTCEG score recompute
  20. 2026-09-13 03:00 UTCGHSA enrichment
  21. 2026-09-12 15:00 UTCEPSS rescore
  22. 2026-09-12 03:54 UTCEG score recompute
  23. 2026-09-12 03:54 UTCGHSA enrichment
  24. 2026-09-11 14:52 UTCEPSS rescore
  25. 2026-09-11 09:36 UTCEPSS rescore
  26. 2026-09-11 04:46 UTCEG score recompute
  27. 2026-09-11 04:46 UTCGHSA enrichment
  28. 2026-09-10 09:34 UTCEPSS rescore
  29. 2026-09-10 05:35 UTCGHSA enrichment
  30. 2026-09-09 06:28 UTCEG score recompute
  31. 2026-09-09 06:28 UTCGHSA enrichment
  32. 2026-09-08 22:00 UTCEPSS rescore
  33. 2026-09-07 18:24 UTCEG score recompute
  34. 2026-09-07 18:24 UTCGHSA enrichment
  35. 2026-09-07 16:01 UTCEPSS rescore
  36. 2026-09-06 13:47 UTCEPSS rescore
  37. 2026-09-06 07:58 UTCEG score recompute
  38. 2026-09-06 07:58 UTCGHSA enrichment
  39. 2026-09-05 08:52 UTCEG score recompute
  40. 2026-09-05 08:52 UTCGHSA enrichment
  41. 2026-09-04 09:46 UTCEG score recompute
  42. 2026-09-04 09:46 UTCGHSA enrichment
  43. 2026-09-04 05:06 UTCEPSS rescore
  44. 2026-09-03 07:10 UTCEG score recompute
  45. 2026-09-03 07:10 UTCGHSA enrichment
  46. 2026-09-02 14:11 UTCEPSS rescore
  47. 2026-09-01 22:12 UTCEG score recompute
  48. 2026-09-01 22:12 UTCGHSA enrichment
  49. 2026-09-01 13:53 UTCEPSS rescore
  50. 2026-09-01 04:39 UTCEPSS rescore
  51. 2026-08-31 22:54 UTCGHSA enrichment
  52. 2026-08-30 20:39 UTCEG score recompute
  53. 2026-08-30 20:39 UTCGHSA enrichment
  54. 2026-08-30 19:17 UTCEPSS rescore
  55. 2026-08-30 01:22 UTCEPSS rescore
  56. 2026-08-29 21:33 UTCEG score recompute
  57. 2026-08-29 21:33 UTCGHSA enrichment
  58. 2026-08-28 21:41 UTCEPSS rescore
  59. 2026-08-27 14:25 UTCEPSS rescore
  60. 2026-08-27 09:23 UTCEG score recompute
  61. 2026-08-27 09:22 UTCGHSA enrichment
  62. 2026-08-26 14:46 UTCEPSS rescore
  63. 2026-08-26 10:15 UTCEG score recompute
  64. 2026-08-26 10:15 UTCGHSA enrichment
  65. 2026-08-25 13:48 UTCEPSS rescore
  66. 2026-08-25 10:00 UTCEG score recompute
  67. 2026-08-25 10:00 UTCGHSA enrichment
  68. 2026-08-24 10:54 UTCEG score recompute
  69. 2026-08-24 10:54 UTCGHSA enrichment
  70. 2026-08-23 11:48 UTCEG score recompute
  71. 2026-08-23 11:48 UTCGHSA enrichment
  72. 2026-08-23 00:19 UTCEPSS rescore
  73. 2026-08-22 12:42 UTCEG score recompute
  74. 2026-08-22 12:42 UTCGHSA enrichment
  75. 2026-08-21 23:49 UTCEPSS rescore

Publicly available exploits

(2 references)

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

  • GitHub PoCkalhoralireza/CVE-2026-17532
    First seen Aug 5, 2026

    Seraphinite Accelerator <= 2.29.18 - Reflected Cross-Site Scripting PoC

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-17532.yaml
    First seen Jan 1, 2026

    Seraphinite Accelerator <= 2.29.18 - Cross-Site Scripting

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-17532?
CVE-2026-17532 is a medium vulnerability published on August 5, 2026. The Seraphinite Accelerator plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'seraphaccelprep' parameter in versions up to, and including, 2.29.15. This is due to the CacheExtractPreparePageParams() function using PHP's loose inequality operator (!=) to compare the…
When was CVE-2026-17532 disclosed?
CVE-2026-17532 was first published on August 5, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17532 actively exploited?
CVE-2026-17532 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-17532?
CVE-2026-17532 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-17532?
No fix for CVE-2026-17532 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-17532 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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