CVE-2026-43891
Description
changedetection.io is a free open source web page change detection tool. Prior to 0.55.1, the vulnerability is caused by trusting attacker-controlled snapshot paths restored from backup files. The vulnerable flow starts in the backup restore logic. When a backup ZIP is restored, the application extracts the archive and copies each restored watch UUID directory directly into the live datastore using shutil.copytree(entry.path, dst_dir). This preserves attacker-controlled files inside the restored watch directory, including history.txt. After restore, the application parses history.txt in the watch history property and returns the contents of the targeted local file. This vulnerability is fixed in 0.55.1.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
changedetection.ioPyPI | < 0.55.1 | 0.55.1 |
Affected products
3- Range: <= 0.54.10
- cpe:2.3:a:webtechnologies:changedetection:*:*:*:*:*:*:*:*Range: <0.55.1
Patches
Vulnerability mechanics
References
5- github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-8757-69j2-hx56nvdExploitMitigationVendor AdvisoryWEB
- github.com/pocket-id/pocket-id/security/advisories/GHSA-w6p7-2fxx-4f44nvdExploitMitigationVendor AdvisoryNot ApplicableWEB
- github.com/advisories/GHSA-8757-69j2-hx56ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-43891ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/changedetection-io/PYSEC-2026-30.yamlghsaWEB
News mentions
0No linked articles in our index yet.