CVE-2026-8457

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH 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(high)
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
33%
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 59× in last 7d / 165× 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 165 total refreshes for this CVE.

  1. 2026-08-21 07:08 UTCGHSA enrichment
  2. 2026-08-21 03:10 UTCGHSA enrichment
  3. 2026-08-20 23:13 UTCEG score recompute
  4. 2026-08-20 23:13 UTCGHSA enrichment
  5. 2026-08-20 22:56 UTCEPSS rescore
  6. 2026-08-20 19:16 UTCGHSA enrichment
  7. 2026-08-20 15:19 UTCGHSA enrichment
  8. 2026-08-20 11:21 UTCGHSA enrichment
  9. 2026-08-20 07:24 UTCGHSA enrichment
  10. 2026-08-20 03:26 UTCGHSA enrichment
  11. 2026-08-19 23:29 UTCGHSA enrichment
  12. 2026-08-19 19:32 UTCEG score recompute
  13. 2026-08-19 19:32 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 15:35 UTCGHSA enrichment
  16. 2026-08-19 11:36 UTCGHSA enrichment
  17. 2026-08-19 07:38 UTCGHSA enrichment
  18. 2026-08-19 03:41 UTCGHSA enrichment
  19. 2026-08-18 23:45 UTCGHSA enrichment
  20. 2026-08-18 19:47 UTCGHSA enrichment
  21. 2026-08-18 15:50 UTCEG score recompute
  22. 2026-08-18 15:50 UTCGHSA enrichment
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 13:49 UTCEPSS rescore
  25. 2026-08-18 11:33 UTCGHSA enrichment
Show 75 more
  1. 2026-08-18 07:35 UTCGHSA enrichment
  2. 2026-08-18 03:34 UTCGHSA enrichment
  3. 2026-08-17 23:36 UTCGHSA enrichment
  4. 2026-08-17 19:39 UTCGHSA enrichment
  5. 2026-08-17 15:42 UTCEG score recompute
  6. 2026-08-17 15:42 UTCGHSA enrichment
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-17 11:45 UTCGHSA enrichment
  9. 2026-08-17 07:48 UTCGHSA enrichment
  10. 2026-08-17 03:51 UTCGHSA enrichment
  11. 2026-08-16 23:54 UTCGHSA enrichment
  12. 2026-08-16 19:57 UTCGHSA enrichment
  13. 2026-08-16 16:00 UTCEG score recompute
  14. 2026-08-16 16:00 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 12:03 UTCGHSA enrichment
  18. 2026-08-16 08:06 UTCGHSA enrichment
  19. 2026-08-16 04:09 UTCEG score recompute
  20. 2026-08-16 04:09 UTCGHSA enrichment
  21. 2026-08-16 02:15 UTCEPSS rescore
  22. 2026-08-16 00:12 UTCGHSA enrichment
  23. 2026-08-15 20:15 UTCGHSA enrichment
  24. 2026-08-15 16:18 UTCGHSA enrichment
  25. 2026-08-15 12:21 UTCGHSA enrichment
  26. 2026-08-15 08:24 UTCGHSA enrichment
  27. 2026-08-15 04:27 UTCEG score recompute
  28. 2026-08-15 04:27 UTCGHSA enrichment
  29. 2026-08-15 01:31 UTCEPSS rescore
  30. 2026-08-15 00:30 UTCGHSA enrichment
  31. 2026-08-14 20:33 UTCGHSA enrichment
  32. 2026-08-14 16:36 UTCGHSA enrichment
  33. 2026-08-14 12:38 UTCGHSA enrichment
  34. 2026-08-14 08:41 UTCGHSA enrichment
  35. 2026-08-14 04:44 UTCGHSA enrichment
  36. 2026-08-14 00:47 UTCEG score recompute
  37. 2026-08-14 00:47 UTCGHSA enrichment
  38. 2026-08-13 22:00 UTCEPSS rescore
  39. 2026-08-13 20:50 UTCGHSA enrichment
  40. 2026-08-13 16:53 UTCGHSA enrichment
  41. 2026-08-13 12:56 UTCGHSA enrichment
  42. 2026-08-13 08:59 UTCGHSA enrichment
  43. 2026-08-13 05:02 UTCGHSA enrichment
  44. 2026-08-13 01:05 UTCGHSA enrichment
  45. 2026-08-12 21:09 UTCGHSA enrichment
  46. 2026-08-12 18:17 UTCGHSA enrichment
  47. 2026-08-12 14:20 UTCEG score recompute
  48. 2026-08-12 14:20 UTCGHSA enrichment
  49. 2026-08-12 13:51 UTCEPSS rescore
  50. 2026-08-12 10:22 UTCGHSA enrichment
  51. 2026-08-12 06:25 UTCGHSA enrichment
  52. 2026-08-12 02:26 UTCGHSA enrichment
  53. 2026-08-11 22:29 UTCGHSA enrichment
  54. 2026-08-11 18:32 UTCGHSA enrichment
  55. 2026-08-11 14:35 UTCEG score recompute
  56. 2026-08-11 14:35 UTCGHSA enrichment
  57. 2026-08-11 13:43 UTCEPSS rescore
  58. 2026-08-11 10:38 UTCGHSA enrichment
  59. 2026-08-11 06:41 UTCGHSA enrichment
  60. 2026-08-11 02:44 UTCEG score recompute
  61. 2026-08-11 02:44 UTCGHSA enrichment
  62. 2026-08-11 00:00 UTCEPSS rescore
  63. 2026-08-10 22:47 UTCGHSA enrichment
  64. 2026-08-10 18:50 UTCGHSA enrichment
  65. 2026-08-10 14:53 UTCGHSA enrichment
  66. 2026-08-10 10:55 UTCGHSA enrichment
  67. 2026-08-10 06:58 UTCGHSA enrichment
  68. 2026-08-10 03:01 UTCGHSA enrichment
  69. 2026-08-09 23:04 UTCGHSA enrichment
  70. 2026-08-09 19:07 UTCGHSA enrichment
  71. 2026-08-09 15:10 UTCEG score recompute
  72. 2026-08-09 15:10 UTCGHSA enrichment
  73. 2026-08-09 13:47 UTCEPSS rescore
  74. 2026-08-09 11:14 UTCGHSA enrichment
  75. 2026-08-09 07:17 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 66.5% 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.

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