Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
PraisonAI's spider_tools URL validation in praisonaiagents before 1.6.40 and praisonai before 4.6.40 can be bypassed with alternate encodings of loopback addresses, because it only blocks exact strings such as localhost and 127.0.0.1. An attacker who can influence URLs passed to scrape_page, crawl, or extract_text can make the process send HTTP requests to loopback-only services and receive their responses. Upgrade praisonaiagents to 1.6.40 or praisonai to 4.6.40.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.5 | Medium | 3.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0018, the 7th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:01 UTC First seen by agentprime
- 31 Oct 2026, 15:01 UTC Confirmed by OSV