How severe is CVE-2026-6873?

CVE-2026-6873 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-6873 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6873?

CVE-2026-6873 affects Djangoproject Django. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6873?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-6873 have an EU (EUVD) identifier?

Yes. CVE-2026-6873 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34086.

When was CVE-2026-6873 published?

CVE-2026-6873 was published on 2026-06-03 and last updated on 2026-06-17.

CVE-2026-6873

CVE-2026-6873 is a low-severity vulnerability in Djangoproject Django with a CVSS 3.x base score of 3.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
CVSS v4: 2.3
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34086
Weakness: CWE-347
Affected product: Djangoproject Django
Published: 2026-06-03
Last modified: 2026-06-17

Description

An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15. `django.http.HttpRequest.get_signed_cookie` in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct `(name, salt)` pairs that produce the same concatenation. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Peng Zhou for reporting this issue.

Frequently asked questions

What is CVE-2026-6873?: An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15. `django.http.HttpRequest.get_signed_cookie` in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct `(name, salt)` pairs that produce the same concatenation. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Peng Zhou for reporting this issue.
How severe is CVE-2026-6873?: CVE-2026-6873 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-6873 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6873?: CVE-2026-6873 affects Djangoproject Django. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6873?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6873 have an EU (EUVD) identifier?: Yes. CVE-2026-6873 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34086.
When was CVE-2026-6873 published?: CVE-2026-6873 was published on 2026-06-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*

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