CVE-2026-48753

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.9%, top 43% 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, secondary
Elevated
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 9.9Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Incus is a system container and virtual machine manager. Prior to version 7.1.0, the S3 protocol upload endpoint is vulnerable to path traversal and allows creation of arbitrary files on the host. This behavior could lead to arbitrary command execution. Version 7.1.0 fixes the issue.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
61
EG Risk 61/100

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
Severity99% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
0.7%
EPSS %ILE
52nd
KEV
Not listed

Published

June 26, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Oct 2, 2026
🔬 Proof of concept available. Patch available. Sources: github.
githubMentions a patch (unverified)🟡 PoC Available

Arbitrary file write via path traversal in S3 multipart upload · Advisory · lxc/incus · GitHub

https://github.com/lxc/incus/security/advisories/GHSA-ccjc-4qc3-jxqc

Vendor Advisories for CVE-2026-48753(1)

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

Affected Packages

(5 across 2 ecosystems)
Go(4)
PackageVulnerable rangeFix by version rangeDependents
github.com/lxc/incus—
  • every version on: no fix on record
—
github.com/lxc/incus/v6—
  • every version on: no fix on record
—
github.com/lxc/incus/v7—
  • every version up to 7.1.0: fixed in 7.1.0
—
github.com/lxc/incus/v7/cmd/incusd—
  • every version up to 7.1.0: fixed in 7.1.0
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
incus6.0.4-2 ... 7.0.0-2~bpo13+1 (24 versions)
  • every version up to 7.0.0-2: fixed in 7.0.0-2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 24× 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.

  1. 2026-10-06 15:18 UTCEPSS rescore
  2. 2026-10-05 17:43 UTCEPSS rescore
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-01 19:50 UTCEPSS rescore
  6. 2026-09-30 15:03 UTCEPSS rescore
  7. 2026-09-28 13:51 UTCEPSS rescore
  8. 2026-09-27 13:48 UTCEPSS rescore
  9. 2026-09-26 15:59 UTCEPSS rescore
  10. 2026-09-26 00:27 UTCEPSS rescore
  11. 2026-09-23 17:53 UTCEPSS rescore
  12. 2026-09-23 07:50 UTCEG score recompute
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-18 20:36 UTCEG score recompute
  15. 2026-09-18 19:28 UTCEPSS rescore
  16. 2026-09-18 07:12 UTCEG score recompute
  17. 2026-09-16 14:08 UTCEPSS rescore
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-14 01:10 UTCEG score recompute
  20. 2026-09-13 16:47 UTCEPSS rescore
  21. 2026-09-12 15:34 UTCEG score recompute
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-10 09:35 UTCEPSS rescore
  24. 2026-09-08 22:01 UTCEPSS rescore
  25. 2026-09-07 16:01 UTCEPSS rescore
Show 25 more
  1. 2026-09-06 16:01 UTCEG score recompute
  2. 2026-09-06 13:47 UTCEPSS rescore
  3. 2026-09-04 05:06 UTCEPSS rescore
  4. 2026-09-02 14:12 UTCEPSS rescore
  5. 2026-09-01 13:54 UTCEPSS rescore
  6. 2026-09-01 04:40 UTCEPSS rescore
  7. 2026-08-30 19:21 UTCEG score recompute
  8. 2026-08-30 19:17 UTCEPSS rescore
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-28 21:41 UTCEPSS rescore
  11. 2026-08-27 23:02 UTCEG score recompute
  12. 2026-08-27 14:25 UTCEPSS rescore
  13. 2026-08-26 14:46 UTCEPSS rescore
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-24 21:48 UTCEG score recompute
  16. 2026-08-24 12:53 UTCEG score recompute
  17. 2026-08-23 00:56 UTCEG score recompute
  18. 2026-08-23 00:19 UTCEPSS rescore
  19. 2026-08-21 16:28 UTCEG score recompute
  20. 2026-08-21 15:56 UTCEG score recompute
  21. 2026-08-21 15:21 UTCEG score recompute
  22. 2026-07-30 13:22 UTCEG score recompute
  23. 2026-07-26 14:33 UTCEG score recompute
  24. 2026-07-23 03:18 UTCEG score recompute
  25. 2026-06-26 19:37 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-48753?
CVE-2026-48753 is a critical vulnerability published on June 26, 2026. Incus is a system container and virtual machine manager. Prior to version 7.1.0, the S3 protocol upload endpoint is vulnerable to path traversal and allows creation of arbitrary files on the host. This behavior could lead to arbitrary command execution. Version 7.1.0 fixes the issue.
When was CVE-2026-48753 disclosed?
CVE-2026-48753 was first published on June 26, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48753 actively exploited?
CVE-2026-48753 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-48753?
CVE-2026-48753 has a CVSS base score of 9.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-48753?
A fix for CVE-2026-48753 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-48753 are linked in the Vendor Advisories panel on this page.

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