CVE-2026-27606

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.5%, top 28% 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
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.5%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Rollup is a module bundler for JavaScript. Versions prior to 2.80.0, 3.30.0, and 4.59.0 of the Rollup module bundler (specifically v4.x and present in current source) is vulnerable to an Arbitrary File Write via Path Traversal. Insecure file name sanitization in the core engine allows an attacker to control output filenames (e.g., via CLI named inputs, manual chunk aliases, or malicious plugins) and use traversal sequences (../) to overwrite files anywhere on the host filesystem that the build process has permissions for. This can lead to persistent Remote Code Execution (RCE) by overwriting critical system or user configuration files. Versions 2.80.0, 3.30.0, and 4.59.0 contain a patch for the issue.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
EPSS PROB
1.5%
EPSS %ILE
74th
KEV
Not listed

Published

February 25, 2026

Last Modified

September 10, 2026

Advisory Details (9)

Auto-updated Oct 1, 2026
🔬 Proof of concept available. Patch available. Sources: redhat, github_commit, github_release, github.
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:13512
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:13508
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:10175
github Patch Available🟡 PoC Available

Arbitrary File Write via Path Traversal in Rollup 4 · Advisory · rollup/rollup · GitHub

https://github.com/rollup/rollup/security/advisories/GHSA-mw96-cpmx-2vgc
github_release Patch Available

v4.59.0

Patch available: rollup/rollup v4.59.0

https://github.com/rollup/rollup/releases/tag/v4.59.0
github_release Patch Available

v3.30.0

Patch available: rollup/rollup v3.30.0

https://github.com/rollup/rollup/releases/tag/v3.30.0
github_commit

commit d6dee5e99bb8 (rollup/rollup)

Fix landed in rollup/rollup commit d6dee5e99bb8 — awaiting tagged release

https://github.com/rollup/rollup/commit/d6dee5e99bb82aac0bee1df4ab9efbde455452c3
github_commit Patch Available

commit c8cf1f9c48c5 (rollup/rollup)

Patch available: rollup/rollup v3.30.0 (contains commit c8cf1f9c48c5)

https://github.com/rollup/rollup/commit/c8cf1f9c48c516285758c1e11f08a54f304fd44e
github_commit Patch Available

commit c60770d7aaf7 (rollup/rollup)

Patch available: rollup/rollup v4.59.0 (contains commit c60770d7aaf7)

https://github.com/rollup/rollup/commit/c60770d7aaf750e512c1b2774989ea4596e660b2

Vendor Advisories for CVE-2026-27606(10)

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

Patch Availability(10)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatautomation-gateway-0:2.5.20260422-2.el9ap2026-05-04redhat
redhatautomation-platform-ui-0:2.6.8-1.el9ap2026-05-04redhat
redhatansible-automation-platform-26/gateway-rhel9:17773111202026-05-04redhat
redhatdevspaces/traefik-rhel9:17767185852026-04-23redhat
redhatopenshift-service-mesh/kiali-rhel8:17761913022026-04-16redhat
redhatrhdh/rhdh-hub-rhel9:17751406472026-04-07redhat
redhatrhdh/rhdh-hub-rhel9:17745456052026-03-30redhat
redhatquay/quay-rhel8:17739710772026-03-24redhat
redhatrhtas/rhtas-console-ui-rhel9:17739347942026-03-24redhat
redhatopenshift-service-mesh/kiali-rhel8:17730599172026-03-19redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
node-rollup2.38.4-1 ... 3.7.5-1 (58 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-rollup3.15.0-1 ... 3.30.0-6 (17 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-rollup3.29.5-1 ... 3.30.0-6 (9 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-rollup3.29.5-1, 3.29.5-2, 3.29.5-3
  • every version up to 3.30.0-1: fixed in 3.30.0-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
rollup—
  • every version up to 2.80.0: fixed in 2.80.0
  • 3.0.0 up to 3.30.0: fixed in 3.30.0
  • 4.0.0 up to 4.59.0: fixed in 4.59.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× 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 149 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Same product

1 shown

Debian:11:node-rollup

Frequently asked(5)

What is CVE-2026-27606?
CVE-2026-27606 is a critical vulnerability published on February 25, 2026. Rollup is a module bundler for JavaScript. Versions prior to 2.80.0, 3.30.0, and 4.59.0 of the Rollup module bundler (specifically v4.x and present in current source) is vulnerable to an Arbitrary File Write via Path Traversal. Insecure file name sanitization in the core engine allows an attacker…
When was CVE-2026-27606 disclosed?
CVE-2026-27606 was first published on February 25, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27606 actively exploited?
CVE-2026-27606 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.5% probability of exploitation in the next 30 days (74th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-27606?
CVE-2026-27606 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-27606?
A fix for CVE-2026-27606 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-27606 are linked in the Vendor Advisories panel on this page.

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