CVE-2021-43682: thinkphp-bjyblog (last update Jun 4 2021) is affected by a Cross Site Scripting (XSS) vulnerability in AdminBa

Routine

MEDIUM 6.1MITIGATE

CVE-2021-43682 is a medium-severity flaw (CVSS 6.1) affecting thinkphp-bjyblog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

thinkphp-bjyblog (last update Jun 4 2021) is affected by a Cross Site Scripting (XSS) vulnerability in AdminBaseController.class.php. The exit function terminates the script and prints a message to the user that contains $_SERVER['HTTP_HOST'].

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-12-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: thinkphp-bjyblog project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-12-02 14:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

thinkphp-bjyblog project thinkphp-bjyblog MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy thinkphp-bjyblog || rpm -q thinkphp-bjyblog || thinkphp-bjyblog --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-43682?

thinkphp-bjyblog: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-43682 being exploited?

CVE-2021-43682 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-43682 affect?

CVE-2021-43682 affects thinkphp-bjyblog. Severity is medium (CVSS 6.1). thinkphp-bjyblog (last update Jun 4 2021) is affected by a Cross Site Scripting (XSS) vulnerability in AdminBaseController.class.php. The exit function terminates the script and prints a message to the user that contains $_SERVER['HTTP_HOST

How urgent is CVE-2021-43682?

Priority 38/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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