CVE-2026-45773

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 97% 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, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Turborepo is a high-performance build system for JavaScript and TypeScript codebases. Prior to 2.9.14, Turborepo's self-hosted login and SSO browser flows did not validate a CSRF state value on the localhost callback. While the CLI was waiting for authentication, a malicious web page could send a request to the local callback server with an attacker-controlled token. If accepted before the legitimate callback, the CLI could complete login with the wrong credentials. This affects users authenticating the turbo CLI against self-hosted remote cache/auth endpoints. Vercel-hosted login flows using device authorization are not affected. This vulnerability is fixed in 2.9.14.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

Published

May 15, 2026

Last Modified

May 19, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
Patch available. Sources: github.
githubMentions a patch (unverified)

Login callback CSRF/session fixation · Advisory · vercel/turborepo · GitHub

https://github.com/vercel/turborepo/security/advisories/GHSA-hcf7-66rw-9f5r

Vendor Advisories for CVE-2026-45773(1)

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
turbo—
  • every version up to 2.9.14: fixed in 2.9.14
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 23× 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 157 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-07 23:48 UTCEPSS rescore
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  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-30 04:28 UTCOSV refresh
  12. 2026-09-27 13:48 UTCEPSS rescore
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  23. 2026-09-11 07:23 UTCOSV refresh
  24. 2026-09-10 09:34 UTCEPSS rescore
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  1. 2026-09-07 16:01 UTCEPSS rescore
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  10. 2026-08-23 17:28 UTCEG score recompute
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  19. 2026-08-17 10:16 UTCEG score recompute
  20. 2026-08-16 14:56 UTCEPSS rescore
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  22. 2026-08-16 02:14 UTCEPSS rescore
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  24. 2026-08-14 02:19 UTCEG score recompute
  25. 2026-08-13 22:00 UTCEPSS rescore
  26. 2026-08-12 14:52 UTCEG score recompute
  27. 2026-08-12 13:51 UTCEPSS rescore
  28. 2026-08-11 08:50 UTCEG score recompute
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  30. 2026-08-10 06:56 UTCEG score recompute
  31. 2026-08-09 13:46 UTCEPSS rescore
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  35. 2026-08-05 19:17 UTCEPSS rescore
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  38. 2026-08-03 22:45 UTCEG score recompute
  39. 2026-08-03 10:36 UTCEPSS rescore
  40. 2026-08-02 20:52 UTCEG score recompute
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  42. 2026-08-01 18:59 UTCEG score recompute
  43. 2026-08-01 04:16 UTCEPSS rescore
  44. 2026-07-30 16:28 UTCEPSS rescore
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  50. 2026-07-24 14:17 UTCEPSS rescore
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  52. 2026-07-23 03:16 UTCEG score recompute
  53. 2026-07-22 14:08 UTCEPSS rescore
  54. 2026-07-21 15:24 UTCEPSS rescore
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  58. 2026-07-18 10:04 UTCEPSS rescore
  59. 2026-07-18 00:59 UTCOSV refresh
  60. 2026-07-16 17:03 UTCEPSS rescore
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  73. 2026-07-01 15:07 UTCEPSS rescore
  74. 2026-06-30 23:22 UTCEPSS rescore
  75. 2026-06-29 14:06 UTCEPSS rescore

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npm:turbo

Frequently asked(5)

What is CVE-2026-45773?
CVE-2026-45773 is a medium vulnerability published on May 15, 2026. Turborepo is a high-performance build system for JavaScript and TypeScript codebases. Prior to 2.9.14, Turborepo's self-hosted login and SSO browser flows did not validate a CSRF state value on the localhost callback. While the CLI was waiting for authentication, a malicious web page could send a…
When was CVE-2026-45773 disclosed?
CVE-2026-45773 was first published on May 15, 2026, with the most recent update on May 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45773 actively exploited?
CVE-2026-45773 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-2026-45773?
CVE-2026-45773 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-45773?
A fix for CVE-2026-45773 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45773 are linked in the Vendor Advisories panel on this page.

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