CVE-2026-11977

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-05. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

The WP Post Author – Author Box, Multiple Authors, Guest Authors & Custom Avatars plugin for WordPress is vulnerable to generic SQL Injection via the 'wpma_metabox_authors_list' parameter in all versions up to, and including, 3.9.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with author-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation is a two-step chain: an attacker first saves a crafted guest-author token via the wpma_metabox_authors_list parameter during post creation or editing, then triggers the injection when any admin user loads the post list screen at /wp-admin/edit.php, causing the injected SQL result to be rendered in the Authors column.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity65% × 45%
Exploitation0% × 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
0.4%
EPSS %ILE
33rd
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 (5)

Vendor Advisories for CVE-2026-11977(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 14× 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 152 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11977?
CVE-2026-11977 is a medium vulnerability published on August 5, 2026. The WP Post Author – Author Box, Multiple Authors, Guest Authors & Custom Avatars plugin for WordPress is vulnerable to generic SQL Injection via the 'wpmametaboxauthorslist' parameter in all versions up to, and including, 3.9.1 due to insufficient escaping on the user supplied parameter and lack…
When was CVE-2026-11977 disclosed?
CVE-2026-11977 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-2026-11977 actively exploited?
CVE-2026-11977 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-11977?
CVE-2026-11977 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-11977?
No fix for CVE-2026-11977 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-2026-11977 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-11977

Explore →

Is Your Infrastructure Affected by CVE-2026-11977?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs