CVE-2021-47957

MEDIUMNVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-05-16. NVD baseline CVSS 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: Elevated riskExposed: 0

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

Cookie Law Bar 1.2.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting unsanitized input to the Bar Message field. Attackers can inject script payloads through the plugin settings page that execute in the browsers of all WordPress users viewing the site, enabling cookie theft and sensitive data exfiltration.

CVSS v3
6.4
EG Score
6.4(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity64% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

May 16, 2026

Last Modified

May 24, 2026

Advisory Details (4)

Auto-updated May 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

WordPress Plugin Cookie Law Bar 1.2.1 Stored XSS via clb_bar_msg | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wordpress-plugin-cookie-law-bar-stored-xss-via-clb-bar-msg
generic🟡 PoC Available

WordPress Plugin Cookie Law Bar 1.2.1 - 'clb_bar_msg' Stored Cross-Site Scripting (XSS) - PHP webapps Exploit

https://www.exploit-db.com/exploits/49905
generic

WordPress Cookie Consent • Cookie Law Info

https://www.cookielawinfo.com/wordpress-plugin/
generic

Cookie Law Bar – WordPress plugin | WordPress.org

https://wordpress.org/plugins/cookie-law-bar/

Vendor Advisories for CVE-2021-47957(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 6× in last 7d / 49× 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 228 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-47957?
CVE-2021-47957 is a medium vulnerability published on May 16, 2026. Cookie Law Bar 1.2.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting unsanitized input to the Bar Message field. Attackers can inject script payloads through the plugin settings page that execute in the browsers of…
When was CVE-2021-47957 disclosed?
CVE-2021-47957 was first published in the National Vulnerability Database on May 16, 2026, with the most recent update on May 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-47957 actively exploited?
CVE-2021-47957 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 90.5% of all scored CVEs.
What is the CVSS score of CVE-2021-47957?
CVE-2021-47957 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2021-47957?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47957, 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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