CVE-2026-70622

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: Elevated riskExposed services: Not assessed

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

tar-rs versions 0.4.11 through 0.4.46 contain a symlink escape vulnerability in the Builder::append_dir_all() function that allows attackers to read files outside the intended source root directory by planting symlinks in an attacker-controlled directory. When a privileged process archives an untrusted directory, the function follows symlinks without verifying that resolved targets remain within the source root, causing out-of-bounds files to be included in the archive as regular files and disclosed to the attacker.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100CISA SSVC

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%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 10, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Aug 10, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

tar-rs 0.4.11 - 0.4.46 Symlink Escape via append_dir_all() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/tar-rs-symlink-escape-via-append-dir-all
generic🟡 PoC Available

CVE-2026-70622 - tar-rs `Builder::append_dir_all` symlink escape allows privileged out-of-root file disclosure · GitHub

https://gist.github.com/thesmartshadow/e7dac0bb690ee17b9cc142154cb11726

Vendor Advisories for CVE-2026-70622(2)

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
rust-tar0.4.38-1 ... 0.4.46-1 (11 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rust-tar0.4.43-4, 0.4.44-1, 0.4.45-1, 0.4.45-2, 0.4.46-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rust-tar0.4.43-4, 0.4.44-1, 0.4.45-1, 0.4.45-2, 0.4.46-1
  • 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 18× in last 7d / 93× 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 172 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-70622?
CVE-2026-70622 is a medium vulnerability published on August 10, 2026. tar-rs versions 0.4.11 through 0.4.46 contain a symlink escape vulnerability in the Builder::appenddirall() function that allows attackers to read files outside the intended source root directory by planting symlinks in an attacker-controlled directory. When a privileged process archives an…
When was CVE-2026-70622 disclosed?
CVE-2026-70622 was first published on August 10, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70622 actively exploited?
CVE-2026-70622 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70622?
CVE-2026-70622 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70622?
No fix for CVE-2026-70622 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-70622 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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