CVE-2026-41526

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-04-28. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

In KDE KCoreAddons before 6.25, KShell::quoteArgs is intended to safely quote arguments so that they can be passed to a shell command. This parsing does not adequately handle metacharacters, leading to an escape from the shell. All applications relying on this method in a security-critical path to handle user input are affected and could be exploited. In particular, because sendInput() sends a string to a terminal, a control character such as \x01 can be used during injection.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

April 28, 2026

Last Modified

May 5, 2026

Advisory Details (4)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic
https://kde.org/info/security/advisory-20260427-1.txt
generic

Frameworks / KCoreAddons · GitLab

https://invent.kde.org/frameworks/kcoreaddons/
generic

kcoreaddons/src/lib/util/kshell.h at 50d360736c399502fedf203e95482b0d0e5a3ea2 · KDE/kcoreaddons · GitHub

https://github.com/KDE/kcoreaddons/blob/50d360736c399502fedf203e95482b0d0e5a3ea2/src/lib/util/kshell.h#L43-L49
generic

kcoreaddons/src/lib/util/kshell.h at 50d360736c399502fedf203e95482b0d0e5a3ea2 · KDE/kcoreaddons · GitHub

https://github.com/KDE/kcoreaddons/blob/50d360736c399502fedf203e95482b0d0e5a3ea2/src/lib/util/kshell.h#L168

Vendor Advisories for CVE-2026-41526(1)

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

Affected Packages

(6 across 4 ecosystems)
Debian:13(2)
PackageVulnerable rangeFixed inDependents
kcoreaddons5.116.0-1, 5.116.0-2, 5.116.0-3, 5.116.0-4——
kf6-kcoreaddons6.13.0-1 ... 6.28.0-2 (11 versions)——
Debian:14(2)
PackageVulnerable rangeFixed inDependents
kcoreaddons5.116.0-15.116.0-2—
kf6-kcoreaddons6.13.0-1 ... 6.23.0-2 (6 versions)6.26.0-1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
kcoreaddons5.100.0-1 ... 5.98.0-1 (30 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
kcoreaddons5.103.0-1 ... 5.116.0-4 (9 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 28× 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 199 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-41526?
CVE-2026-41526 is a medium vulnerability published on April 28, 2026. In KDE KCoreAddons before 6.25, KShell::quoteArgs is intended to safely quote arguments so that they can be passed to a shell command. This parsing does not adequately handle metacharacters, leading to an escape from the shell. All applications relying on this method in a security-critical path to…
When was CVE-2026-41526 disclosed?
CVE-2026-41526 was first published in the National Vulnerability Database on April 28, 2026, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41526 actively exploited?
CVE-2026-41526 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 93.3% of all scored CVEs.
What is the CVSS score of CVE-2026-41526?
CVE-2026-41526 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-41526?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41526, 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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