CVE-2026-55569

MEDIUMPre-NVD 6.66.6
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (7th 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
Elevated
6.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.6Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

aqua is a declarative command-line version manager written in Go. Prior to 2.60.1, pkg/unarchive/archives.go in the handler.HandleFile method calls os.Symlink with archives.FileInfo.LinkTarget without verifying that the target remains under the extraction destination. A later regular-file entry at the same archive path is opened with OpenFile using O_CREATE and O_WRONLY, which follows the attacker-planted symlink. A malicious or compromised package archive can therefore write attacker-controlled bytes outside aqua's extraction directory with the privileges of the user running aqua, potentially overwriting shell startup files, tool configuration, or writable executable paths. This issue is fixed in version 2.60.1.

CVSS v3
6.6
EG Score
6.6MEDIUMmedium confidence
EG Risk
46
EG Risk 46/100

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)
Severity66% × 45%
The EG Score, 6.6 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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
0.2%
EPSS %ILE
7th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (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 28, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Aug 28, 2026
Patch available. Sources: github_release, github, github_commit.
GitHub advisoryMentions a patch (unverified)

Archive extraction in aqua follows attacker-planted symlinks, allowing writes outside the install directory · Advisory · aquaproj/aqua · GitHub

https://github.com/aquaproj/aqua/security/advisories/GHSA-mf5c-hw34-4hpp
GitHub release Patch Available

v2.60.1

Patch available: aquaproj/aqua v2.60.1

https://github.com/aquaproj/aqua/releases/tag/v2.60.1
GitHub commit

commit d5b02b220188 (aquaproj/aqua)

Fix landed in aquaproj/aqua commit d5b02b220188 — awaiting tagged release

https://github.com/aquaproj/aqua/commit/d5b02b220188de376a661b3aabfa912202a1a59a

Vendor Advisories for CVE-2026-55569(1)

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

Affected Packages

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFix by version rangeDependents
github.com/aquaproj/aqua—
  • every version on: no fix on record
—
github.com/aquaproj/aqua/v2—
  • every version up to 2.60.1: fixed in 2.60.1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 52× 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 0.2% · 7th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  3. 2026-10-12 15:55 UTCEG score recompute
  4. 2026-10-11 19:39 UTCEG score recompute
  5. 2026-10-11 16:54 UTCEG score recompute
  6. 2026-10-11 14:17 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  9. 2026-10-10 05:16 UTCEG score recompute
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  11. 2026-10-09 02:39 UTCEG score recompute
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-10-07 09:50 UTCEG score recompute
  15. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-10-06 07:28 UTCEG score recompute
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  18. 2026-10-05 05:07 UTCEG score recompute
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-10-04 02:55 UTCEG score recompute
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  22. 2026-10-03 00:43 UTCEG score recompute
  23. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  24. 2026-10-01 22:31 UTCEG score recompute
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
Show 55 more
  1. 2026-09-30 19:49 UTCEG score recompute
  2. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-09-29 15:00 UTCEG score recompute
  5. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-09-28 12:33 UTCEG score recompute
  7. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-09-27 10:21 UTCEG score recompute
  9. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-09-26 08:04 UTCEG score recompute
  11. 2026-09-25 04:44 UTCEG score recompute
  12. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-09-24 02:31 UTCEG score recompute
  14. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-09-23 00:18 UTCEG score recompute
  16. 2026-09-21 22:05 UTCEG score recompute
  17. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-09-19 17:41 UTCEG score recompute
  19. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  20. 2026-09-18 15:29 UTCEG score recompute
  21. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-09-17 13:14 UTCEG score recompute
  23. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  24. 2026-09-16 11:01 UTCEG score recompute
  25. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  26. 2026-09-15 08:49 UTCEG score recompute
  27. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  28. 2026-09-14 06:37 UTCEG score recompute
  29. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  30. 2026-09-13 04:25 UTCEG score recompute
  31. 2026-09-12 02:12 UTCEG score recompute
  32. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  33. 2026-09-10 23:58 UTCEG score recompute
  34. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  35. 2026-09-09 00:27 UTCEG score recompute
  36. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  37. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  38. 2026-09-07 15:38 UTCEG score recompute
  39. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  40. 2026-09-06 13:25 UTCEG score recompute
  41. 2026-09-05 11:13 UTCEG score recompute
  42. 2026-09-04 09:00 UTCEG score recompute
  43. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  44. 2026-09-03 06:47 UTCEG score recompute
  45. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  46. 2026-09-02 04:35 UTCEG score recompute
  47. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  48. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  49. 2026-09-01 02:23 UTCEG score recompute
  50. 2026-09-01 01:50 UTCEG score recompute
  51. 2026-08-31 00:49 UTCEG score recompute
  52. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  53. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  54. 2026-08-28 20:25 UTCEG score recompute
  55. 2026-08-28 17:11 UTCEG score recomputeFirst assessed: 6.6 MEDIUM

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55569?
CVE-2026-55569 is a medium-severity vulnerability; its CVE record was published on August 28, 2026. aqua is a declarative command-line version manager written in Go. Prior to 2.60.1, pkg/unarchive/archives.go in the handler.HandleFile method calls os.Symlink with archives.FileInfo.LinkTarget without verifying that the target remains under the extraction destination. A later regular-file entry at…
When was the CVE record for CVE-2026-55569 published?
The CVE record for CVE-2026-55569 was published on August 28, 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-2026-55569 actively exploited?
CVE-2026-55569 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55569?
CVE-2026-55569 has a CVSS base score of 6.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55569?
A fix for CVE-2026-55569 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-55569 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-55569

Explore →

Is Your Infrastructure Affected by CVE-2026-55569?

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

Book a Demo →Browse All CVEs