# CVE-2026-88015: rclone local: crafted Range request against a translated symlink panics (DoS)

> Attackers can cause a denial of service in rclone's local backend by sending crafted Range requests when symlink support is enabled.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Sep 2026
- **Updated:** 10 Sep 2026
- **Also known as:** BIT-rclone-2026-88015, DEBIAN-CVE-2026-88015, GHSA-p6m2-r3w9-mpxw, GO-2026-6461, MINI-3qcq-hm4q-w79g, MINI-77rg-43h3-9964, MINI-9r9x-fwcf-6vm5, MINI-h878-5x4m-3pwm, MINI-hh6j-p63p-9xm5, MINI-hh97-hjw8-85hc, MINI-rvj3-q8r4-h5mf, MINI-wrgf-92vg-6jw3, UBUNTU-CVE-2026-88015

## What is CVE-2026-88015?

CVE-2026-88015 is a medium-severity denial of service vulnerability in rclone, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-248 (Uncaught Exception), CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2026-88015?

4 open source packages ship an affected version, including github.com/rclone/rclone and rclone. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/rclone/rclone` | Go | All versions | 1.75.1 |
| `github.com/rclone/rclone` | Go | All versions | 1.75.1 |
| `github.com/rclone/rclone` | Go | All versions | 1.75.1 |
| `rclone` | Bitnami | All versions | 1.75.1 |

Products: Rclone Rclone.

## How do I fix CVE-2026-88015?

Upgrade github.com/rclone/rclone to 1.75.1 or later.

## Is CVE-2026-88015 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88015 exists.

## Other vulnerabilities in rclone

- [CVE-2026-88018](https://insights.sbomify.com/CVE-2026-88018/): rclone serve s3: --auth-proxy without --auth-key authenticates nobody - full SigV4 signature bypass (critical 9.8)
- [CVE-2026-49980](https://insights.sbomify.com/CVE-2026-49980/): Rclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fix (critical 9.8)
- [CVE-2026-41179](https://insights.sbomify.com/CVE-2026-41179/): RClone: Unauthenticated operations/fsinfo allows attacker-controlled backend instantiation and local command execution (critical 9.2)
- [CVE-2026-41176](https://insights.sbomify.com/CVE-2026-41176/): Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution (critical 9.2)
- [CVE-2026-59733](https://insights.sbomify.com/CVE-2026-59733/): rclone `serve restic --private-repos` authorization bypass: `..` in the URL path lets an authenticated user read, overwrite and delete other users' repositories (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-88015 and fix it if it is affected.

What it is: CVE-2026-88015 is a medium-severity denial of service vulnerability in rclone, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88015 exists.

Affected packages and fixed versions:
- github.com/rclone/rclone (Go): affected all versions; fixed in 1.75.1
- github.com/rclone/rclone (Go): affected all versions; fixed in 1.75.1
- github.com/rclone/rclone (Go): affected all versions; fixed in 1.75.1
- rclone (Bitnami): affected all versions; fixed in 1.75.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-88015/ (Markdown: https://insights.sbomify.com/CVE-2026-88015/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-88015
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-88015
- OSV: https://osv.dev/vulnerability/CVE-2026-88015

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-88015/
Summaries are generated and may contain mistakes; the official description above is the record.