{"id":"CVE-2021-39229","aliases":["GHSA-qhmp-h54x-38qr","PYSEC-2021-327"],"url":"https://o3.security/vulnerability/CVE-2021-39229","summary":"Apprise vulnerable to regex injection with IFTTT Plugin","details":"### Impact\nAnyone _publicly_ hosting the Apprise library and granting them access to the IFTTT notification service.\n\n### Patches\nUpdate to Apprise v0.9.5.1\n   ```bash\n   # Install Apprise v0.9.5.1 from PyPI\n   pip install apprise==0.9.5.1\n   ```\n\nThe patch to the problem was performed [here](https://github.com/caronc/apprise/pull/436/files).\n\n### Workarounds\nAlternatively, if upgrading is not an option, you can safely remove the following file:\n- `apprise/plugins/NotifyIFTTT.py` \n\nThe above will eliminate the ability to use IFTTT, but everything else will work smoothly.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Apprise](https://github.com/caronc/apprise/issues)\n* Email me at [lead2gold@gmail.com](mailto:lead2gold@gmail.com)\n\n### Additional Credit\nGithub would not allow me to additionally credit **Rasmus Petersen**, but I would like to put that here at the very least - thank you for finding and reporting this issue along with those already credited\n\n## Additional Notes:\n- Github would not allow me to add/tag the 2 CWE's this issue is applicable to (only CWE-400).  The other is: CWE-730 (placed in the title)\n","published":"2021-09-20T22:15:07.530Z","modified":"2026-08-07T19:47:03.727025Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.01891,"percentile":0.78226,"asOf":"2026-09-08"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"apprise","fixedVersion":"0.9.5.1"}],"fix":{"url":"https://github.com/caronc/apprise/pull/436","label":"caronc/apprise#436"},"references":[{"type":"ADVISORY","url":"https://github.com/caronc/apprise/security/advisories/GHSA-qhmp-h54x-38qr"},{"type":"FIX","url":"https://github.com/caronc/apprise/pull/436"},{"type":"EVIDENCE","url":"https://github.com/caronc/apprise/blob/0007eade20934ddef0aba38b8f1aad980cfff253/apprise/plugins/NotifyIFTTT.py#L356-L359"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39229"},{"type":"WEB","url":"https://github.com/caronc/apprise/commit/e20fce630d55e4ca9b0a1e325a5fea6997489831"},{"type":"PACKAGE","url":"https://github.com/caronc/apprise"},{"type":"WEB","url":"https://github.com/caronc/apprise/releases/tag/v0.9.5.1"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/apprise/PYSEC-2021-327.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T19:47:03.727025Z"}}