# CVE-2026-1135: itsourcecode Society Management System activity.php cross site scripting

> Remote attackers can inject malicious scripts via the Title argument in activity.php, potentially compromising user sessions or executing code.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Jan 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-5649-r252-h649

## What is CVE-2026-1135?

CVE-2026-1135 is a medium-severity cross-site scripting vulnerability in itsourcecode Society Management System, published on 19 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A security flaw has been discovered in itsourcecode Society Management System 1.0. This impacts an unknown function of the file /admin/activity.php. The manipulation of the argument Title results in cross site scripting. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-1135?

It affects 1 product.


Products: Angeljudesuarez Society Management System.

## How do I fix CVE-2026-1135?

No fix has been published for CVE-2026-1135 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1135 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1135 exists.

## Other vulnerabilities in itsourcecode Society Management System

- [CVE-2026-3410](https://insights.sbomify.com/CVE-2026-3410/): itsourcecode Society Management System check_studid.php sql injection (medium 6.9)
- [CVE-2026-2114](https://insights.sbomify.com/CVE-2026-2114/): itsourcecode Society Management System edit_admin.php sql injection (medium 6.9)
- [CVE-2026-2115](https://insights.sbomify.com/CVE-2026-2115/): itsourcecode Society Management System delete_expenses.php sql injection (medium 6.9)
- [CVE-2026-2116](https://insights.sbomify.com/CVE-2026-2116/): itsourcecode Society Management System edit_expenses.php sql injection (medium 6.9)
- [CVE-2026-2117](https://insights.sbomify.com/CVE-2026-2117/): itsourcecode Society Management System edit_activity.php sql injection (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1135 and fix it if it is affected.

What it is: CVE-2026-1135 is a medium-severity cross-site scripting vulnerability in itsourcecode Society Management System, published on 19 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1135 exists.

Affected product: itsourcecode Society Management System. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2026-1135/ (Markdown: https://insights.sbomify.com/CVE-2026-1135/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1135
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1135
- OSV: https://osv.dev/vulnerability/CVE-2026-1135

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-1135/
Summaries are generated and may contain mistakes; the official description above is the record.