CVE-2026-27606

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.65% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 76.3% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Modified. NVD last modified this record on 2026-09-10.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-02-25 02:08Z8 MO AGO

Last updated

2026-09-10 12:05Z1 MO AGO

Reserved

2026-02-20

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base

Data version

5.2

Document digest

220a4ae6a92c834ecf65eeb97698f2123533721a284e7f04dd04ac1937cfb2cc

• github.comhttps://github.com/rollup/rollup/security/advisories/GHSA-mw96-cpmx-2vgcx_refsource_CONFIRM
• github.comhttps://github.com/rollup/rollup/commit/c60770d7aaf750e512c1b2774989ea4596e660b2x_refsource_MISC
• github.comhttps://github.com/rollup/rollup/commit/c8cf1f9c48c516285758c1e11f08a54f304fd44ex_refsource_MISC
• github.comhttps://github.com/rollup/rollup/commit/d6dee5e99bb82aac0bee1df4ab9efbde455452c3x_refsource_MISC
• github.comhttps://github.com/rollup/rollup/releases/tag/v2.80.0x_refsource_MISC
• github.comhttps://github.com/rollup/rollup/releases/tag/v3.30.0x_refsource_MISC
• github.comhttps://github.com/rollup/rollup/releases/tag/v4.59.0x_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-27606vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2442530https://bugzilla.redhat.com/show_bug.cgi?id=2442530issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27606.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:13512vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:13508vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:13545vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6174vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6802vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:10175vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:8483vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:5132vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:5665vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:5649vendor-advisoryx_refsource_REDHAT