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%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

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
6.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

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%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 11, 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(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 rangeFixed inDependents
rust-tar0.4.38-1 ... 0.4.45-2 (10 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
rust-tar0.4.43-4, 0.4.44-1, 0.4.45-1, 0.4.45-2——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
rust-tar0.4.43-4, 0.4.44-1, 0.4.45-1, 0.4.45-2——

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 25× in last 7d / 91× 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 129 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 in the National Vulnerability Database on August 10, 2026, with the most recent update on August 11, 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% probability of exploitation in the next 30 days, which ranks it in the top 72.2% of all scored CVEs.
What is the CVSS score of CVE-2026-70622?
CVE-2026-70622 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-70622?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70622, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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