CVE-2026-8457

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-02. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

The WooCommerce - Social Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to and including 2.8.7. This is due to the plugin's Apple login handler accepting the Apple id_token and decoding only its base64 payload without verifying the JWT signature against Apple's public keys or validating the issuer, audience, or expiry claims, combined with the security nonce required to invoke the login flow being publicly exposed to unauthenticated users via a localized JavaScript object on the login page. This makes it possible for unauthenticated attackers to log in as any existing WordPress user — including administrators — by supplying a forged id_token whose payload contains the target user's email address, as that email is used without any role exclusion to resolve a WordPress account and immediately issue an authenticated session for it.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

August 1, 2026

Last Modified

August 12, 2026

References (2)

Vendor Advisories for CVE-2026-8457(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 43× in last 7d / 177× 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 333 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-8457?
CVE-2026-8457 is a critical vulnerability published on August 1, 2026. The WooCommerce - Social Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to and including 2.8.7. This is due to the plugin's Apple login handler accepting the Apple idtoken and decoding only its base64 payload without verifying the JWT signature against Apple's…
When was CVE-2026-8457 disclosed?
CVE-2026-8457 was first published in the National Vulnerability Database on August 1, 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-2026-8457 actively exploited?
CVE-2026-8457 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 62.5% of all scored CVEs.
What is the CVSS score of CVE-2026-8457?
CVE-2026-8457 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-8457?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8457, 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

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