CVE-2026-95835

MEDIUMPre-NVD 5.65.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 5.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (below the 1st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-87239 (ENISA EUVD) · GHSA-c73q-fvjv-39j2 (GitHub Security Advisories)Source: ENISA EUVD

5.6EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (Secur0) states them: "Upgrade to kitty 0.49.0 or later."

Missing Authorization in the askpass escape code handler in kitty from 0.25.0 before 0.49.0 allows a local user other than the one running the terminal to obtain the text typed into a prompt that kitty itself displays, because handle_remote_askpass() in kitty/window.py opens the POSIX shared memory object named in the escape code, parses a prompt definition out of it, and writes the user's answer back into an object of that same name, without at any point checking that the object is owned by the user running kitty or that its permissions exclude other users. The equivalent consumer of the same SharedMemory class in the ssh kitten performs exactly that check; the askpass path did not. The handler is reached through a device control string processed from the byte stream of the window, so the attacker must also cause bytes of their choosing to be displayed by the victim's terminal. Where the POSIX shared memory namespace is shared between the two users, a second local user can create an object with permissions that allow the victim to read and write it, cause the victim's kitty to render a prompt of the attacker's choosing, including a masked password prompt, and read the typed secret back out of the object afterwards. The prompt text is additionally passed to the display without control character sanitisation, so it can overwrite the warning line kitty prints above it. The answer is written by reopening an object of that name when the user answers, rather than through the handle already held. This results in disclosure of a secret typed by the victim to a second local user, and does not require any privilege on the victim's account.

CVSS v3
5.6
EG Score
5.6MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity56% × 45%
Impact severity (EG Severity): CVSS 5.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
below the 1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.6): severity, escalated by confirmed exploitation. This CVE's 5.6 is its impact severity (EG Severity), not escalated.

EG Severity
5.6 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 25, 2026

Last Modified

September 29, 2026

Advisory Details (3)

Auto-updated Sep 25, 2026
Patch available. Sources: github_commit, github_release.
Web page

cve-2026-95835 · Missing ownership check on the shared memory object named by the kitty askpass escape code | Vulnerabilities published by Secur0

https://secur0.com/en/cna/cve-list/cve-2026-95835-kitty-askpass-shared-memory-ownership
GitHub release Patch Available

version 0.49.0

Patch available: kovidgoyal/kitty v0.49.0

https://github.com/kovidgoyal/kitty/releases/tag/v0.49.0
GitHub commit

commit 3281919056c4 (kovidgoyal/kitty)

Fix landed in kovidgoyal/kitty commit 3281919056c4 — awaiting tagged release

https://github.com/kovidgoyal/kitty/commit/3281919056c442e4ba6f5abed7ee2c5130de31ff

Vendor Advisories for CVE-2026-95835(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
kitty0.26.5-5 ... 0.48.2-1.1 (40 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
kitty0.41.1-2 ... 0.48.2-1.1 (18 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
kitty0.41.1-2 ... 0.48.2-1.1 (16 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 49× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  2. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  3. 2026-10-29 21:25 UTCOSV refresh
  4. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  5. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  6. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  7. 2026-10-25 13:48 UTCEG score recompute
  8. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  9. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  10. 2026-10-22 12:19 UTCEG score recompute
  11. 2026-10-22 12:18 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  12. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  13. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  14. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  15. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  16. 2026-10-18 02:57 UTCEG score recompute
  17. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  18. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  19. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  20. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  21. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  22. 2026-10-12 14:41 UTCEG score recompute
  23. 2026-10-11 19:11 UTCEG score recompute
  24. 2026-10-11 18:49 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  25. 2026-10-11 16:27 UTCEG score recompute
Show 46 more
  1. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  2. 2026-10-11 13:39 UTCEG score recompute
  3. 2026-10-10 20:52 UTCEG score recompute
  4. 2026-10-10 20:52 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  6. 2026-10-09 23:00 UTCEG score recompute
  7. 2026-10-09 23:00 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  8. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  9. 2026-10-09 01:08 UTCEG score recompute
  10. 2026-10-09 01:08 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  11. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  12. 2026-10-08 03:17 UTCEG score recompute
  13. 2026-10-08 03:16 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  15. 2026-10-07 05:24 UTCEG score recompute
  16. 2026-10-07 05:24 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  17. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  18. 2026-10-06 07:32 UTCEG score recompute
  19. 2026-10-06 07:32 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  20. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  21. 2026-10-05 09:40 UTCEG score recompute
  22. 2026-10-05 09:40 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  23. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  24. 2026-10-04 11:48 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  25. 2026-10-03 13:56 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  26. 2026-10-02 16:02 UTCEG score recompute
  27. 2026-10-02 16:01 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  28. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  29. 2026-10-01 18:07 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  30. 2026-09-30 20:08 UTCEG score recompute
  31. 2026-09-30 20:08 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  32. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  33. 2026-09-29 22:17 UTCEG score recompute
  34. 2026-09-29 22:16 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  35. 2026-09-29 10:16 UTCEG score recompute
  36. 2026-09-29 10:15 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  37. 2026-09-28 12:18 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  38. 2026-09-27 14:26 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  39. 2026-09-26 16:34 UTCEG score recompute
  40. 2026-09-26 16:34 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  41. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  42. 2026-09-25 18:40 UTCEG score recompute
  43. 2026-09-25 18:39 UTCGHSA enrichmentGHSA-c73q-fvjv-39j2
  44. 2026-09-25 17:19 UTCEG score recompute
  45. 2026-09-25 16:39 UTCEG score recomputeFirst assessed: 5.6 MEDIUM
  46. 2026-09-25 16:39 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-95835?
CVE-2026-95835 is a medium-severity vulnerability; its CVE record was published on September 25, 2026. Missing Authorization in the askpass escape code handler in kitty from 0.25.0 before 0.49.0 allows a local user other than the one running the terminal to obtain the text typed into a prompt that kitty itself displays, because handle_remote_askpass() in kitty/window.py opens the POSIX shared memory…
When was the CVE record for CVE-2026-95835 published?
The CVE record for CVE-2026-95835 was published on September 25, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 29, 2026; the record at its source may have been updated since.
Is CVE-2026-95835 actively exploited?
CVE-2026-95835 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-95835?
CVE-2026-95835 has a CVSS base score of 5.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-95835?
A fix for CVE-2026-95835 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (Secur0) states them: "Upgrade to kitty 0.49.0 or later." The vendor advisories EchelonGraph has for CVE-2026-95835 are linked in the Vendor Advisories panel on this page.

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