CVE-2026-48700

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

An issue was discovered in all versions of PCManFM-Qt starting from 1.1.0. When a regular file's path is passed as a URI in an org.freedesktop.FileManager1.ShowFolders D-Bus method call, PCManFM-Qt delegates to a different program (based on the file type) without user confirmation. This could be used to achieve code execution or circumvent network namespace restrictions. NOTE: those outcomes are potentially unwanted by most users; however, the behavior of the product does comply with the applicable specification, and a simplistic solution (ensuring that the URI does not name a regular file) may have adverse consequences for I/O.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

May 22, 2026

Last Modified

July 23, 2026

Advisory Details (4)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

oss-security - Re: PCManFM-Qt allows arbitrary files to be opened via the org.freedesktop.FileManager1.ShowFolders method

http://www.openwall.com/lists/oss-security/2026/05/24/6
generic🟡 PoC Available

oss-security - PCManFM-Qt allows arbitrary files to be opened via the org.freedesktop.FileManager1.ShowFolders method

https://www.openwall.com/lists/oss-security/2026/05/20/2
generic

oss-security - On the issue of MIME handlers that execute arbitrary code (e.g. Wine)

https://www.openwall.com/lists/oss-security/2026/05/19/1
generic

Releases · lxqt/pcmanfm-qt · GitHub

https://github.com/lxqt/pcmanfm-qt/releases

Vendor Advisories for CVE-2026-48700(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pcmanfm-qt0.16.0-1 ... 2.4.0-1 (23 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pcmanfm-qt1.2.1-1 ... 2.4.0-1 (16 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pcmanfm-qt2.1.0-2 ... 2.4.0-1 (6 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pcmanfm-qt2.1.0-2 ... 2.4.0-1 (6 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 31× 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 350 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-48700?
CVE-2026-48700 is a critical vulnerability published on May 22, 2026. An issue was discovered in all versions of PCManFM-Qt starting from 1.1.0. When a regular file's path is passed as a URI in an org.freedesktop.FileManager1.ShowFolders D-Bus method call, PCManFM-Qt delegates to a different program (based on the file type) without user confirmation. This could be…
When was CVE-2026-48700 disclosed?
CVE-2026-48700 was first published in the National Vulnerability Database on May 22, 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-2026-48700 actively exploited?
CVE-2026-48700 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 92.0% of all scored CVEs.
What is the CVSS score of CVE-2026-48700?
CVE-2026-48700 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-48700?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48700, 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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