CVE-2026-47699

MEDIUMPre-NVD 6.46.4
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (29th 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
6.4EG
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: 0.4%CVSS: 6.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Confidential Containers Guest Components provides guest tools and components for confidential container workloads. From 0.16.0 until 0.20.0, a crafted OCI image layer can make image_rs::stream::unpack::unpack() create a hardlink outside its destination directory. In image-rs/src/stream/unpack.rs, try_hardlink_fallback() validates the hardlink source but computes the destination with destination.join(&entry_rel). Rust Path::join replaces the base when entry_rel is an absolute tar entry path, so fs::hard_link(&src_canon, &dst_entry_abs) can write attacker-controlled content to an arbitrary absolute path. In Confidential Containers the workload owner already controls trusted image content, so the issue is a workload-owner escape into the pod virtual machine rather than a crossing of the image trust boundary, but it may enable access to pod virtual machine capabilities and attestation abuse. This issue is fixed in version 0.20.0.

CVSS v3
6.4
EG Score
6.4MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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 (value × EchelonGraph’s weight)
Severity64% × 45%
The EG Score, 6.4 of 10.
Exploitation0.4% × 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
0.4%
EPSS %ILE
29th
KEV
Not listed

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.

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

August 18, 2026

Last Modified

September 9, 2026

Advisory Details (6)

Auto-updated Aug 18, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

image-rs: zip-slip-class arbitrary file write via absolute entry path in hardlink fallback · Advisory · confidential-containers/guest-components · GitHub

https://github.com/confidential-containers/guest-components/security/advisories/GHSA-84rc-2q4r-45pc
GitHub release Patch Available

v0.20.0

Patch available: confidential-containers/guest-components v0.20.0

https://github.com/confidential-containers/guest-components/releases/tag/v0.20.0
GitHub pull request Patch Available

image-rs: use pathrs when unpacking

Patch available: confidential-containers/guest-components v0.20.0 (PR #1457 merged 2026-05-14)

https://github.com/confidential-containers/guest-components/pull/1457
GitHub pull request Patch Available

image-rs: introduce pathrs (incrementally)

Patch available: confidential-containers/guest-components v0.20.0 (PR #1440 merged 2026-05-07)

https://github.com/confidential-containers/guest-components/pull/1440
GitHub commit Patch Available

commit 7cc1bc458973 (confidential-containers/guest-components)

Patch available: confidential-containers/guest-components v0.20.0 (contains commit 7cc1bc458973)

https://github.com/confidential-containers/guest-components/commit/7cc1bc458973310296e58aedbb15cb7963297bbe
GitHub commit Patch Available

commit 14fbb711af0b (confidential-containers/guest-components)

Patch available: confidential-containers/guest-components v0.20.0 (contains commit 14fbb711af0b)

https://github.com/confidential-containers/guest-components/commit/14fbb711af0b29bb9cad307969d57b0de9b85d7f

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 43× 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. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  3. 2026-10-12 16:01 UTCEG score recompute
  4. 2026-10-11 19:44 UTCEG score recompute
  5. 2026-10-11 16:59 UTCEG score recompute
  6. 2026-10-11 14:23 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  12. 2026-10-07 10:45 UTCEG score recompute
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  14. 2026-10-06 08:03 UTCEG score recompute
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  17. 2026-10-03 17:01 UTCEG score recompute
  18. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  19. 2026-10-02 12:59 UTCEG score recompute
  20. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  21. 2026-10-01 10:53 UTCEG score recompute
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  23. 2026-09-30 08:54 UTCEG score recompute
  24. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  25. 2026-09-28 09:17 UTCEG score recompute
Show 63 more
  1. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  2. 2026-09-27 07:18 UTCEG score recompute
  3. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  4. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  5. 2026-09-25 03:45 UTCEG score recompute
  6. 2026-09-24 01:45 UTCEG score recompute
  7. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-09-22 23:46 UTCEG score recompute
  9. 2026-09-21 21:10 UTCEG score recompute
  10. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-09-19 17:10 UTCEG score recompute
  12. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-09-18 15:10 UTCEG score recompute
  14. 2026-09-17 13:11 UTCEG score recompute
  15. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  16. 2026-09-16 10:46 UTCEG score recompute
  17. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  18. 2026-09-15 08:40 UTCEG score recompute
  19. 2026-09-14 06:40 UTCEG score recompute
  20. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-09-13 04:41 UTCEG score recompute
  22. 2026-09-12 02:38 UTCEG score recompute
  23. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-09-11 00:37 UTCEG score recompute
  25. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  26. 2026-09-09 02:46 UTCEG score recompute
  27. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  28. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  29. 2026-09-07 06:37 UTCEG score recompute
  30. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  31. 2026-09-06 04:19 UTCEG score recompute
  32. 2026-09-05 02:19 UTCEG score recompute
  33. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  34. 2026-09-02 21:23 UTCEG score recompute
  35. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  36. 2026-09-01 17:16 UTCEG score recompute
  37. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  38. 2026-08-31 14:56 UTCEG score recompute
  39. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  40. 2026-08-30 12:56 UTCEG score recompute
  41. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  42. 2026-08-29 10:56 UTCEG score recompute
  43. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  44. 2026-08-28 08:48 UTCEG score recompute
  45. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  46. 2026-08-27 06:46 UTCEG score recompute
  47. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  48. 2026-08-26 04:22 UTCEG score recompute
  49. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  50. 2026-08-25 02:22 UTCEG score recompute
  51. 2026-08-24 00:22 UTCEG score recompute
  52. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  53. 2026-08-22 22:23 UTCEG score recompute
  54. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  55. 2026-08-21 20:23 UTCEG score recompute
  56. 2026-08-21 19:34 UTCEG score recompute
  57. 2026-08-21 02:23 UTCEG score recompute
  58. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  59. 2026-08-20 00:23 UTCEG score recompute
  60. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  61. 2026-08-18 22:23 UTCEG score recompute
  62. 2026-08-18 21:38 UTCEG score recomputeFirst assessed: 6.4 MEDIUM
  63. 2026-08-18 21:38 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-47699?
CVE-2026-47699 is a medium-severity vulnerability; its CVE record was published on August 18, 2026. Confidential Containers Guest Components provides guest tools and components for confidential container workloads. From 0.16.0 until 0.20.0, a crafted OCI image layer can make imagers::stream::unpack::unpack() create a hardlink outside its destination directory. In image-rs/src/stream/unpack.rs,…
When was the CVE record for CVE-2026-47699 published?
The CVE record for CVE-2026-47699 was published on August 18, 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 9, 2026; the record at its source may have been updated since.
Is CVE-2026-47699 actively exploited?
CVE-2026-47699 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47699?
CVE-2026-47699 has a CVSS base score of 6.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-47699?
A fix for CVE-2026-47699 is available: update to the fixed version the vendor names in its advisory.

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