CVE-2026-25855

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-08. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

OpenBullet2 through version 0.3.2 contains a remote code execution vulnerability that allows authenticated users to execute arbitrary commands by uploading script files (.bat.ps1.sh) through the FileProxySource proxy loading feature. Attackers can upload malicious script files as proxy sources, causing the server to execute the scripts and return output as proxy lines, resulting in arbitrary command execution on the host as the process user.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

June 8, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jun 8, 2026
No patch confirmed yet.
generic

OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openbullet2-authenticated-rce-via-fileproxysource-script-upload
generic
https://hackernoon.com/one-empty-header-to-admin-how-an-auth-bypass-breaks-openbullet2

Vendor Advisories for CVE-2026-25855(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 18× in last 7d / 77× 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 148 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-25855?
CVE-2026-25855 is a high vulnerability published on June 8, 2026. OpenBullet2 through version 0.3.2 contains a remote code execution vulnerability that allows authenticated users to execute arbitrary commands by uploading script files (.bat.ps1.sh) through the FileProxySource proxy loading feature. Attackers can upload malicious script files as proxy sources,…
When was CVE-2026-25855 disclosed?
CVE-2026-25855 was first published in the National Vulnerability Database on June 8, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-25855 actively exploited?
CVE-2026-25855 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.2% of all scored CVEs.
What is the CVSS score of CVE-2026-25855?
CVE-2026-25855 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-25855?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-25855, 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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