CVE-2026-48920

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as base64 in email content by setting the data-inline attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify file: URLs for images to read arbitrary files from the Jenkins controller filesystem.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
22.1%
KEV
Not listed

Published

May 27, 2026

Last Modified

May 28, 2026

Advisory Details (1)

Auto-updated May 28, 2026
No patch confirmed yet.
generic

Jenkins Security Advisory 2026-05-27

https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3705

Vendor Advisories for CVE-2026-48920(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.jenkins-ci.plugins:email-ext1806.v856a_01a_fa_39a_ ... 2.99 (133 versions)1933.1935.v276319e3cc47—

Weakness Classification(1)

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

Data Freshness Timeline

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

Frequently asked(5)

What is CVE-2026-48920?
CVE-2026-48920 is a high vulnerability published on May 27, 2026. Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as base64 in email content by setting the data-inline attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify file: URLs for images to…
When was CVE-2026-48920 disclosed?
CVE-2026-48920 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on May 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48920 actively exploited?
CVE-2026-48920 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48920?
CVE-2026-48920 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-48920?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48920, 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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