CVE-2026-12958

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 91% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Missing symlink validation in Language Servers for AWS may allow an arbitrary file write outside of the workspace trust boundary. This may occur when a local user opens a workspace with a maliciously crafted symlink that resolves to a file path outside the workspace trust boundary.

To remediate this issue, users should upgrade to version 1.69.0 or higher.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.2%
EPSS %ILE
8th
KEV
Not listed

Published

June 23, 2026

Last Modified

June 23, 2026

Advisory Details (1)

Auto-updated Jun 23, 2026
Patch available.
generic

CVE-2026-12957 and CVE-2026-12958 - Issues in Language Servers for AWS and Amazon Q Developer Plugins

https://aws.amazon.com/security/security-bulletins/2026-047-aws/

Vendor Advisories for CVE-2026-12958(2)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
@aws/lsp-codewhisperer—
  • every version up to 0.0.117: fixed in 0.0.117
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 24× 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 127 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-12958?
CVE-2026-12958 is a high vulnerability published on June 23, 2026. Missing symlink validation in Language Servers for AWS may allow an arbitrary file write outside of the workspace trust boundary. This may occur when a local user opens a workspace with a maliciously crafted symlink that resolves to a file path outside the workspace trust boundary. To remediate…
When was CVE-2026-12958 disclosed?
CVE-2026-12958 was first published on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12958 actively exploited?
CVE-2026-12958 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12958?
CVE-2026-12958 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-12958?
A fix for CVE-2026-12958 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-12958 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-2026-12958

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