How severe is CVE-2026-49980?

CVE-2026-49980 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-49980 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-49980?

CVE-2026-49980 affects Rclone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-49980?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-49980 have an EU (EUVD) identifier?

Yes. CVE-2026-49980 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39018.

When was CVE-2026-49980 published?

CVE-2026-49980 was published on 2026-06-24 and last updated on 2026-08-07.

CVE-2026-49980

CVE-2026-49980 is a critical-severity vulnerability in Rclone with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39018
Weakness: CWE-306
Affected product: Rclone
Published: 2026-06-24
Last modified: 2026-08-07

Description

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.46.0 until 1.74.3, rclone rcd --rc-serve accepts unauthenticated GET and HEAD requests to paths of the form: /[remote:path]/object. The remote value is parsed from the URL and passed to normal backend initialization. Inline remote configuration can set backend options that execute local commands during initialization. As a result, a single unauthenticated GET or HEAD request can execute a command as the rclone process user. This vulnerability is fixed in 1.74.3.

Frequently asked questions

What is CVE-2026-49980?: Rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.46.0 until 1.74.3, rclone rcd --rc-serve accepts unauthenticated GET and HEAD requests to paths of the form: /[remote:path]/object. The remote value is parsed from the URL and passed to normal backend initialization. Inline remote configuration can set backend options that execute local commands during initialization. As a result, a single unauthenticated GET or HEAD request can execute a command as the rclone process user. This vulnerability is fixed in 1.74.3.
How severe is CVE-2026-49980?: CVE-2026-49980 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-49980 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-49980?: CVE-2026-49980 affects Rclone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-49980?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-49980 have an EU (EUVD) identifier?: Yes. CVE-2026-49980 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39018.
When was CVE-2026-49980 published?: CVE-2026-49980 was published on 2026-06-24 and last updated on 2026-08-07.

References

Affected products (1)

cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*

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