CVE-2026-13597

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: Elevated riskExposed: 0

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

The 微信二维码登陆 WordPress plugin through 1.3 does not properly validate WeChat webhook requests, as its signature check always passes, and it discloses the generated login code in the webhook response. This allows an unauthenticated attacker to forge a login event for any existing username, read the login code, and redeem it through an unauthenticated AJAX action to log in as that user, including an administrator, without a password.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
72(Attend)
EG Risk 72/100SSVC: Attend

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
Severity91% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 27, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

QRcode Login for WeChat <= 1.3 – Unauthenticated Account Takeover | CVE 2026-13597 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/5e856219-ece5-4d79-8375-fc0cbdc37d6c/

Vendor Advisories for CVE-2026-13597(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 38× in last 7d / 163× 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 338 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-13597?
CVE-2026-13597 is a critical vulnerability published on July 27, 2026. The 微信二维码登陆 WordPress plugin through 1.3 does not properly validate WeChat webhook requests, as its signature check always passes, and it discloses the generated login code in the webhook response. This allows an unauthenticated attacker to forge a login event for any existing username, read the…
When was CVE-2026-13597 disclosed?
CVE-2026-13597 was first published in the National Vulnerability Database on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13597 actively exploited?
CVE-2026-13597 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 74.8% of all scored CVEs.
What is the CVSS score of CVE-2026-13597?
CVE-2026-13597 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-13597?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13597, 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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