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Vulnerability record · CVE-2026-88015 · published 10 September 2026

CVE-2026-88015: Rclone integer overflow vulnerability

Rclone · Rclone

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, backend/local with --links or links=true exposes symlink targets as .rclonelink objects, and fs.RangeOption.Decode can pass an unchecked positive Range start through Object.Open and openTranslatedLink. The function slices the target string as linkdst[offset:], so a Range start larger than the target length causes a deterministic slice-bounds panic when lib/http/serve exposes the object through HTTP or WebDAV. Go net/http normally recovers the panic per connection, causing request-level denial of service rather than terminating the entire process. This issue is fixed in version 1.75.1.

5.3 CVSS 3.1 Medium EPSS 0.36% · top 72.7% CWE-190 · Integer overflowCWE-248 · CWE-248
5.3CVSS 3.1 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
23 Sep 2026Last modified by NVD

Description

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, backend/local with --links or links=true exposes symlink targets as .rclonelink objects, and fs.RangeOption.Decode can pass an unchecked positive Range start through Object.Open and openTranslatedLink. The function slices the target string as linkdst[offset:], so a Range start larger than the target length causes a deterministic slice-bounds panic when lib/http/serve exposes the object through HTTP or WebDAV. Go net/http normally recovers the panic per connection, causing request-level denial of service rather than terminating the entire process. This issue is fixed in version 1.75.1.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/rclone/rclone/commit/28bf49d66f94acc3f4f7f318504a706686281af9 Patch
https://github.com/rclone/rclone/releases/tag/v1.75.1 Release Notes
https://github.com/rclone/rclone/security/advisories/GHSA-p6m2-r3w9-mpxw Vendor Advisory
https://github.com/rclone/rclone/security/advisories/GHSA-p6m2-r3w9-mpxw Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-88018Rclone improper authentication vulnerabilityrclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, rclone serve s3 config…EPSS 0.51%9.8CVE-2026-49980Rclone missing authentication for critical function vulnerabilityRclone 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 --…EPSS 0.78%9.2CVE-2026-41176Rclone missing authentication for critical function vulnerabilityRclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is expose…EPSS 3.2%9.2CVE-2026-41179Rclone os command injection vulnerabilityRclone is a command-line program to sync files and directories to and from different cloud storage providers. Starting in version 1.48.0 and prior to…EPSS 5.3%8.8CVE-2026-59733Rclone path traversal vulnerabilityRclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.74.4, rclone serve restic --…EPSS 0.55%8.8CVE-2026-54572Rclone link following vulnerabilityRclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.74.4, with -l/--links, rclon…EPSS 0.40%7.5CVE-2020-28924Rclone vulnerabilityAn issue was discovered in Rclone before 1.53.3. Due to the use of a weak random number generator, the password generator has been producing weak pas…EPSS 1.4%7.5CVE-2018-12907Rclone information exposure vulnerabilityIn Rclone 1.42, use of "rclone sync" to migrate data between two Google Cloud Storage buckets might allow attackers to trigger the transmission of an…EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2026-88015), CISA KEV, FIRST EPSS (scores of 2026-10-01). This page is refreshed as NVD updates the record.