CVE-2026-86335

MEDIUMPre-NVD 6.36.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (13th 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-2026-88256 (ENISA EUVD)Source: ENISA EUVD

6.3EG
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: 0.2%CVSS: 6.3Exploit: None knownExposed services: Not assessed

Upgrade to LXD versions 5.0.10, 5.21.8, 6.10 or later (from the CVE record's solution, Canonical Ltd.) — apply it.

Missing Authorization in imageDownload in Canonical LXD before 5.0.10, 5.21.8, and 6.10 on Linux allows a project-restricted client to access private images from other projects via local fingerprint reuse during image or instance import requests.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100

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)
Severity63% × 45%
Impact severity (EG Severity): CVSS 6.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 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: Upgrade to LXD versions 5.0.10, 5.21.8, 6.10 or later (from the CVE record's solution, Canonical Ltd.). Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
13th
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 (6.3): severity, escalated by confirmed exploitation. This CVE's 6.3 is its impact severity (EG Severity), not escalated.

EG Severity
6.3 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
0.2% 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.

Upgrade to LXD versions 5.0.10, 5.21.8, 6.10 or later (from the CVE record's solution, Canonical Ltd.). 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 28, 2026

Last Modified

September 28, 2026

Advisory Details (5)

Auto-updated Sep 28, 2026
Fix named in the CVE record's solution (Canonical Ltd.). Sources: github, github_pr.
GitHub pull request

Restrict image reuse to cached images with identical image source

Fix merged in canonical/lxd PR #18987 on 2026-09-08 — awaiting tagged release

https://github.com/canonical/lxd/pull/18987
GitHub pull request

Restrict image reuse to cached images with identical image source (release-6.9)

Fix merged in canonical/lxd PR #19001 on 2026-09-09 — awaiting tagged release

https://github.com/canonical/lxd/pull/19001
GitHub pull request

Restrict image reuse to cached images with identical image source (stable-5.21)

Fix merged in canonical/lxd PR #19002 on 2026-09-09 — awaiting tagged release

https://github.com/canonical/lxd/pull/19002
GitHub pull request

Restrict image reuse to cached images with identical image source (stable-5.0)

Fix merged in canonical/lxd PR #19003 on 2026-09-08 — awaiting tagged release

https://github.com/canonical/lxd/pull/19003
GitHub advisoryMentions a patch (unverified)

Restricted client can import a private image from another project · Advisory · canonical/lxd · GitHub

https://github.com/canonical/lxd/security/advisories/GHSA-j7p3-5g2v-69j8

Affected Packages

(2 across 2 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
lxd5.0.2+git20231211.1364ae4-1 ... 5.0.2-6 (17 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
lxd5.0.2+git20231211.1364ae4-9 ... 5.0.2+git20231211.1364ae4-9+deb13u7 (8 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 6× in last 7d / 29× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  2. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  3. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  4. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  5. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  6. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  7. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  8. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  9. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  10. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  11. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  12. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  13. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  14. 2026-10-29 23:55 UTCOSV refresh
  15. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  16. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  17. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  19. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  20. 2026-10-25 13:54 UTCEchelonGraph re-scored
  21. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-10-22 12:46 UTCEchelonGraph re-scored
  25. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
Show 41 more
  1. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-10-18 03:05 UTCEchelonGraph re-scored
  4. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  7. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-10-12 14:51 UTCEchelonGraph re-scored
  11. 2026-10-11 19:17 UTCEchelonGraph re-scored
  12. 2026-10-11 16:33 UTCEchelonGraph re-scored
  13. 2026-10-11 13:51 UTCEchelonGraph re-scored
  14. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-11 03:30 UTCEchelonGraph re-scored
  16. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-10-10 04:18 UTCEchelonGraph re-scored
  18. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  19. 2026-10-09 05:30 UTCEchelonGraph re-scored
  20. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  21. 2026-10-08 06:42 UTCEchelonGraph re-scored
  22. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-10-07 07:54 UTCEchelonGraph re-scored
  24. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-10-06 09:05 UTCEchelonGraph re-scored
  26. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  27. 2026-10-05 10:18 UTCEchelonGraph re-scored
  28. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  29. 2026-10-04 11:29 UTCEchelonGraph re-scored
  30. 2026-10-03 12:42 UTCEchelonGraph re-scored
  31. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  32. 2026-10-02 13:54 UTCEchelonGraph re-scored
  33. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  34. 2026-09-30 16:17 UTCEchelonGraph re-scored
  35. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  36. 2026-09-29 16:46 UTCEchelonGraph re-scored
  37. 2026-09-28 17:38 UTCEchelonGraph re-scored
  38. 2026-09-28 16:42 UTCEchelonGraph re-scored
  39. 2026-09-28 14:24 UTCEchelonGraph re-scored
  40. 2026-09-28 13:27 UTCEchelonGraph re-scoredFirst assessed: 6.3 MEDIUM
  41. 2026-09-28 13:27 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-86335?
CVE-2026-86335 is a medium-severity vulnerability; its CVE record was published on September 28, 2026. Missing Authorization in imageDownload in Canonical LXD before 5.0.10, 5.21.8, and 6.10 on Linux allows a project-restricted client to access private images from other projects via local fingerprint reuse during image or instance import requests.
When was CVE-2026-86335 made public?
CVE-2026-86335 was made public on September 25, 2026: that is the date its CVE record's CNA, Canonical Ltd., gives for when the vulnerability was made public. The CVE record itself was published on September 28, 2026. EchelonGraph's copy of the record carries a last-modified date of September 28, 2026; the record at its source may have been updated since.
Is CVE-2026-86335 actively exploited?
CVE-2026-86335 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-86335?
CVE-2026-86335 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-86335?
The CVE record's solution for CVE-2026-86335, written by its CNA Canonical Ltd., names the fix: "Upgrade to LXD versions 5.0.10, 5.21.8, 6.10 or later."

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