How severe is CVE-2026-25527?

CVE-2026-25527 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-25527 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25527?

CVE-2026-25527 affects Webtechnologies Changedetection. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25527?

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

Does CVE-2026-25527 have an EU (EUVD) identifier?

Yes. CVE-2026-25527 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7968.

When was CVE-2026-25527 published?

CVE-2026-25527 was published on 2026-02-19 and last updated on 2026-06-17.

CVE-2026-25527

CVE-2026-25527 is a medium-severity vulnerability in Webtechnologies Changedetection with a CVSS 3.x base score of 5.3. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7968
Weakness: CWE-22
Affected product: Webtechnologies Changedetection
Published: 2026-02-19
Last modified: 2026-06-17

Description

changedetection.io is a free open source web page change detection tool. In versions prior to 0.53.2, the `/static/<group>/<filename>` route accepts `group=".."`, which causes `send_from_directory("static/..", filename)` to execute. This moves the base directory up to `/app/changedetectionio`, enabling unauthenticated local file read of application source files (e.g., `flask_app.py`). Version 0.53.2 fixes the issue.

Frequently asked questions

What is CVE-2026-25527?: changedetection.io is a free open source web page change detection tool. In versions prior to 0.53.2, the `/static/<group>/<filename>` route accepts `group=".."`, which causes `send_from_directory("static/..", filename)` to execute. This moves the base directory up to `/app/changedetectionio`, enabling unauthenticated local file read of application source files (e.g., `flask_app.py`). Version 0.53.2 fixes the issue.
How severe is CVE-2026-25527?: CVE-2026-25527 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-25527 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25527?: CVE-2026-25527 affects Webtechnologies Changedetection. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25527?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-25527 have an EU (EUVD) identifier?: Yes. CVE-2026-25527 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7968.
When was CVE-2026-25527 published?: CVE-2026-25527 was published on 2026-02-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webtechnologies:changedetection:*:*:*:*:*:*:*:*

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