CVE-2023-30777

HIGHNVD 7.17.4▲
EchelonGraph scoreHIGH confidence

Score elevated to 7.4 because EPSS predicts 39% probability of exploitation within the next 30 days (top 1.6% of all CVEs). NVD baseline CVSS 7.1 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Elevated
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 39%CVSS: 7.1Exploit: Elevated riskExposed: 0

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

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in WP Engine Advanced Custom Fields Pro, WP Engine Advanced Custom Fields plugins <= 6.1.5 versions.

CVSS v3
7.1
EG Score
7.4(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity74% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
39%
EPSS %ILE
98%
KEV
Not listed

Published

May 10, 2023

Last Modified

November 21, 2024

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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 126 total refreshes for this CVE.

  1. 2026-09-07 15:59 UTCEPSS rescore
  2. 2026-09-06 13:45 UTCEPSS rescore
  3. 2026-09-05 15:25 UTCEPSS rescore
  4. 2026-09-04 13:58 UTCEPSS rescore
  5. 2026-09-04 05:04 UTCEPSS rescore
  6. 2026-09-02 14:09 UTCEPSS rescore
  7. 2026-09-01 13:51 UTCEPSS rescore
  8. 2026-08-30 19:15 UTCEPSS rescore
  9. 2026-08-30 01:19 UTCEPSS rescore
  10. 2026-08-28 21:38 UTCEPSS rescore
  11. 2026-08-27 14:23 UTCEPSS rescore
  12. 2026-08-26 14:43 UTCEPSS rescore
  13. 2026-08-25 13:46 UTCEPSS rescore
  14. 2026-08-24 14:14 UTCEPSS rescore
  15. 2026-08-23 00:17 UTCEPSS rescore
  16. 2026-08-21 23:46 UTCEPSS rescore
  17. 2026-08-20 22:53 UTCEPSS rescore
  18. 2026-08-19 17:02 UTCEPSS rescore
  19. 2026-08-17 13:44 UTCEPSS rescore
  20. 2026-08-16 14:53 UTCEPSS rescore
  21. 2026-08-16 02:12 UTCEPSS rescore
  22. 2026-08-15 01:28 UTCEPSS rescore
  23. 2026-08-13 21:58 UTCEPSS rescore
  24. 2026-08-12 13:48 UTCEPSS rescore
  25. 2026-08-11 13:39 UTCEPSS rescore
Show 75 more
  1. 2026-08-07 16:24 UTCEPSS rescore
  2. 2026-08-06 13:44 UTCEPSS rescore
  3. 2026-08-05 19:15 UTCEPSS rescore
  4. 2026-08-05 19:15 UTCEPSS rescore
  5. 2026-08-04 10:35 UTCEPSS rescore
  6. 2026-08-01 04:13 UTCEPSS rescore
  7. 2026-08-01 04:13 UTCEPSS rescore
  8. 2026-07-30 16:26 UTCEPSS rescore
  9. 2026-07-30 16:26 UTCEPSS rescore
  10. 2026-07-28 15:34 UTCEPSS rescore
  11. 2026-07-28 15:34 UTCEPSS rescore
  12. 2026-07-27 14:10 UTCEPSS rescore
  13. 2026-07-26 14:52 UTCEPSS rescore
  14. 2026-07-26 14:52 UTCEPSS rescore
  15. 2026-07-25 14:16 UTCEPSS rescore
  16. 2026-07-24 14:15 UTCEPSS rescore
  17. 2026-07-23 14:16 UTCEPSS rescore
  18. 2026-07-23 14:16 UTCEPSS rescore
  19. 2026-07-23 02:21 UTCEG score recompute▲ 0.30
  20. 2026-07-22 23:09 UTCEG score recompute▼ 1.90
  21. 2026-07-22 14:06 UTCEPSS rescore
  22. 2026-07-22 14:06 UTCEPSS rescore
  23. 2026-07-21 15:23 UTCEPSS rescore
  24. 2026-07-20 17:06 UTCEPSS rescore
  25. 2026-07-19 14:29 UTCEPSS rescore
  26. 2026-07-19 14:29 UTCEPSS rescore
  27. 2026-07-19 02:27 UTCEPSS rescore
  28. 2026-07-19 02:27 UTCEPSS rescore
  29. 2026-07-18 10:03 UTCEPSS rescore
  30. 2026-07-18 10:03 UTCEPSS rescore
  31. 2026-07-16 17:01 UTCEPSS rescore
  32. 2026-07-16 17:01 UTCEPSS rescore
  33. 2026-07-15 16:56 UTCEPSS rescore
  34. 2026-07-15 16:56 UTCEPSS rescore
  35. 2026-07-15 01:58 UTCEPSS rescore
  36. 2026-07-15 01:58 UTCEPSS rescore
  37. 2026-07-13 22:28 UTCEPSS rescore
  38. 2026-07-13 22:28 UTCEPSS rescore
  39. 2026-07-13 06:11 UTCEPSS rescore
  40. 2026-07-13 06:11 UTCEPSS rescore
  41. 2026-07-12 05:45 UTCEPSS rescore
  42. 2026-07-11 08:25 UTCEPSS rescore
  43. 2026-07-11 08:25 UTCEPSS rescore
  44. 2026-07-09 19:08 UTCEPSS rescore
  45. 2026-07-09 19:08 UTCEPSS rescore
  46. 2026-07-06 16:26 UTCEPSS rescore
  47. 2026-07-06 16:26 UTCEPSS rescore
  48. 2026-07-04 06:29 UTCEPSS rescore
  49. 2026-07-02 16:59 UTCEPSS rescore
  50. 2026-07-01 15:04 UTCEPSS rescore
  51. 2026-06-30 23:21 UTCEPSS rescore
  52. 2026-06-30 23:21 UTCEPSS rescore
  53. 2026-06-28 14:06 UTCEPSS rescore
  54. 2026-06-28 14:06 UTCEPSS rescore
  55. 2026-06-28 04:54 UTCEPSS rescore
  56. 2026-06-27 03:07 UTCEPSS rescore
  57. 2026-06-25 13:48 UTCEPSS rescore
  58. 2026-06-25 13:48 UTCEPSS rescore
  59. 2026-06-24 14:03 UTCEPSS rescore
  60. 2026-06-24 14:03 UTCEPSS rescore
  61. 2026-06-23 21:31 UTCEPSS rescore
  62. 2026-06-23 21:31 UTCEPSS rescore
  63. 2026-06-22 14:24 UTCEPSS rescore
  64. 2026-06-22 14:24 UTCEPSS rescore
  65. 2026-06-21 01:58 UTCEPSS rescore
  66. 2026-06-21 01:58 UTCEPSS rescore
  67. 2026-06-19 19:24 UTCEPSS rescore
  68. 2026-06-19 19:24 UTCEPSS rescore
  69. 2026-06-18 17:51 UTCEPSS rescore
  70. 2026-06-18 17:51 UTCEPSS rescore
  71. 2026-06-17 17:51 UTCEPSS rescore
  72. 2026-06-17 17:51 UTCEPSS rescore
  73. 2026-06-16 17:51 UTCEPSS rescore
  74. 2026-06-16 17:51 UTCEPSS rescore
  75. 2026-06-15 17:47 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 PoCAlucard0x1/CVE-2023-30777
    First seen Jun 17, 2023

    Proof of Concept (PoC) URL generator for a reflected XSS vulnerability in the Advanced Custom Fields WordPress plugin.

    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-30777.yaml
    First seen Jan 1, 2023

    Advanced Custom Fields < 6.1.6 - Cross-Site Scripting

    Open source ↗

Frequently asked(5)

What is CVE-2023-30777?
CVE-2023-30777 is a high vulnerability published on May 10, 2023. Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in WP Engine Advanced Custom Fields Pro, WP Engine Advanced Custom Fields plugins <= 6.1.5 versions.
When was CVE-2023-30777 disclosed?
CVE-2023-30777 was first published in the National Vulnerability Database on May 10, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-30777 actively exploited?
CVE-2023-30777 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 39% probability of exploitation in the next 30 days, which ranks it in the top 1.5% of all scored CVEs.
What is the CVSS score of CVE-2023-30777?
CVE-2023-30777 has a CVSS v3 base score of 7.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.4.
How do I remediate CVE-2023-30777?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-30777, 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

Explore the affected products and dependency analysis for CVE-2023-30777

Explore →

Is Your Infrastructure Affected by CVE-2023-30777?

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

Start Free Scan →Browse All CVEs