CVE-2026-70622

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH 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 — 3 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(high)
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
27%
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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 36× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 17:24 UTCGHSA enrichment
  3. 2026-08-19 18:44 UTCEG score recompute
  4. 2026-08-19 18:44 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-18 18:11 UTCEG score recompute
  7. 2026-08-18 18:10 UTCGHSA enrichment
  8. 2026-08-18 13:49 UTCEPSS rescore
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-17 19:18 UTCEG score recompute
  11. 2026-08-17 19:18 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 19:28 UTCEG score recompute
  14. 2026-08-16 19:28 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 02:15 UTCEPSS rescore
  18. 2026-08-15 20:47 UTCEG score recompute
  19. 2026-08-15 20:47 UTCGHSA enrichment
  20. 2026-08-15 01:31 UTCEPSS rescore
  21. 2026-08-14 22:06 UTCGHSA enrichment
  22. 2026-08-13 23:26 UTCEG score recompute
  23. 2026-08-13 23:26 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 00:44 UTCEG score recompute
Show 11 more
  1. 2026-08-13 00:44 UTCGHSA enrichment
  2. 2026-08-12 13:51 UTCEPSS rescore
  3. 2026-08-12 02:04 UTCEG score recompute
  4. 2026-08-12 02:04 UTCGHSA enrichment
  5. 2026-08-11 03:22 UTCEG score recompute
  6. 2026-08-11 03:22 UTCGHSA enrichment
  7. 2026-08-11 02:18 UTCEG score recompute
  8. 2026-08-11 02:18 UTCGHSA enrichment
  9. 2026-08-10 18:24 UTCEG score recompute
  10. 2026-08-10 17:55 UTCEG score recompute
  11. 2026-08-10 17:54 UTCMITRE cvelistV5first tracked

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 72.7% 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

Explore the affected products and dependency analysis for CVE-2026-70622

Explore →

Is Your Infrastructure Affected by CVE-2026-70622?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs