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🛡️ CVE-2025-48383 — django-select2

🟠 CVSS 8.2 — High ✅ No Known Exploit CWE-402 NVD
8.2
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Django-Select2 Vulnerable to Widget Instance Secret Cache Key Leaking

Impact

Instances of HeavySelect2Mixin subclasses like the ModelSelect2MultipleWidget and ModelSelect2Widget can secret access tokens across requests. This can allow users to access restricted querysets and restricted data.

Patches

The problem has been patched in version 8.4.1 and all following versions.

Workarounds

This vulnerability is limited use cases where instances of widget classes are created during app loading (not during a request).

Example of affected code:

```python

class MyForm(forms.ModelForm):

class Meta:

widgets = {"my_select_field": Select2ModelWidget()}

```

Django allows you to pass just the widget class (not the instance). This can be used to mitigate the session request leak.

Example of affected code:

```python

class MyForm(forms.ModelForm):

class Meta:

widgets = {"my_select_field": Select2ModelWidget}

```

References

Thanks to @neartik for reporting this issue. I will address it later. I had to delete your issue, to avoid exploitation of this security issue.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: None.

Weakness class

CVE-2025-48383 is classified as CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak'). The product makes resources available to untrusted parties when those resources are only intended to be accessed by the product.

Affected software

CVE-2025-48383 is recorded against 2 packages.

  • django-select2 (fixed in 8.4.1)
  • unknown

Timeline and source

Published on 7 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
pypi.org (Package)
github.com (Advisory)

Other advisories for this package

django-select2 has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak')) in other software:

CVE-2025-48383 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.2
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CWE CWE-402
Public Exploit ✅ No
Source NVD
Published 2026-07-07
Updated 2026-08-20
Modified 2026-07-07
Fix URL N/A

Affected Packages

Software From version Fixed in
django-select2 — 8.4.1
unknown — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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