CVE-2026-49144

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-03. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-34031 (ENISA EUVD) · GHSA-8rpw-6cqh-2v9h (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictPlan mitigationRemediate 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: 0.4%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists browserstack-runner versions up to and including 0.9.5 as affected. No release containing a fix is confirmed on record.

BrowserStack Runner through 0.9.5 contains a path traversal vulnerability in the _default HTTP handler in lib/server.js that allows unauthenticated network-adjacent attackers to read arbitrary files. Attackers can exploit the unauthenticated HTTP server bound on all interfaces to traverse outside the project root and access sensitive files.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
36th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

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

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

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

June 2, 2026

Last Modified

October 8, 2026

Advisory Details (2)

Auto-updated Jun 13, 2026
No fix on record yet. Sources: github.
GitHub advisoryMentions a patch (unverified)

Unauthenticated arbitrary file read via path traversal in HTTP server · Advisory · browserstack/browserstack-runner · GitHub

https://github.com/browserstack/browserstack-runner/security/advisories/GHSA-8rpw-6cqh-2v9h
Web page

BrowserStack Runner 0.9.5 Path Traversal via _default HTTP Handler | Advisories | VulnCheck

https://www.vulncheck.com/advisories/browserstack-runner-path-traversal-via-default-http-handler

Vendor Advisories for CVE-2026-49144(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npmbrowserstack-runner—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
browserstack-runner—
  • every version through 0.9.5: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 43× 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.

Showing the most recent 100 of 241 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 141 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  2. 2026-10-30 13:25 UTCOSV refresh
  3. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  4. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  5. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  6. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  7. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  8. 2026-10-25 14:23 UTCEG score recompute
  9. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-10-22 23:01 UTCEG score recompute
  12. 2026-10-22 23:01 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  13. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  14. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  15. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-10-18 03:34 UTCEG score recompute
  19. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  22. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  23. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  24. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  25. 2026-10-12 16:00 UTCEG score recompute
Show 75 more
  1. 2026-10-11 19:43 UTCEG score recompute
  2. 2026-10-11 16:57 UTCEG score recompute
  3. 2026-10-11 14:22 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  7. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-10-08 16:41 UTCEG score recompute
  9. 2026-10-08 16:41 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  10. 2026-10-08 15:47 UTCEG score recompute
  11. 2026-10-08 15:47 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-10-03 12:39 UTCOSV refresh
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  20. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  22. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  23. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  24. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  25. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  26. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  27. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  28. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  29. 2026-09-14 05:41 UTCEG score recompute
  30. 2026-09-14 05:41 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  31. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  32. 2026-09-13 00:06 UTCOSV refresh
  33. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  34. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  35. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  36. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  37. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  38. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  39. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  40. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  41. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  42. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  43. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  44. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  45. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  46. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  47. 2026-08-25 03:43 UTCEG score recompute
  48. 2026-08-25 03:43 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  49. 2026-08-23 13:38 UTCEG score recompute
  50. 2026-08-23 13:38 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  51. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  52. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  53. 2026-08-21 14:44 UTCEG score recompute
  54. 2026-08-21 14:44 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  55. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  56. 2026-08-20 10:08 UTCEG score recompute
  57. 2026-08-20 10:08 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  58. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  59. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  60. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  61. 2026-08-17 04:03 UTCEG score recompute
  62. 2026-08-17 04:03 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  63. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  64. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  65. 2026-08-15 18:36 UTCEG score recompute
  66. 2026-08-15 18:36 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  67. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  68. 2026-08-14 17:21 UTCEG score recompute
  69. 2026-08-14 17:21 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  70. 2026-08-14 07:03 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  71. 2026-08-13 05:52 UTCEG score recompute
  72. 2026-08-13 05:52 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5
  73. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  74. 2026-08-12 04:02 UTCEG score recompute
  75. 2026-08-12 04:02 UTCGHSA enrichmentGHSA-8rpw-6cqh-2v9h · GitHub severity HIGH · GitHub CVSS 6.5

Frequently asked(5)

What is CVE-2026-49144?
CVE-2026-49144 is a medium-severity vulnerability; its CVE record was published on June 2, 2026. BrowserStack Runner through 0.9.5 contains a path traversal vulnerability in the _default HTTP handler in lib/server.js that allows unauthenticated network-adjacent attackers to read arbitrary files. Attackers can exploit the unauthenticated HTTP server bound on all interfaces to traverse outside…
When was CVE-2026-49144 made public?
CVE-2026-49144 was made public on May 26, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on June 2, 2026. EchelonGraph's copy of the record carries a last-modified date of October 8, 2026; the record at its source may have been updated since.
Is CVE-2026-49144 actively exploited?
CVE-2026-49144 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49144?
CVE-2026-49144 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-49144?
No fix for CVE-2026-49144 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists browserstack-runner versions up to and including 0.9.5 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-49144 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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