CVE-2017-12838: Cross-site request forgery (CSRF) vulnerability in NexusPHP 1.5 allows remote attackers to hijack the authenti

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HIGH 8.8DOWNGRADE

CVE-2017-12838 is a high-severity flaw (CVSS 8.8) affecting nexusphp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site request forgery (CSRF) vulnerability in NexusPHP 1.5 allows remote attackers to hijack the authentication of users for requests that (1) send manas via a request to mybonus.php or (2) add administrators via unspecified vectors.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
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-352
Published	2017-09-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nexusphp project

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

Am I affected?

Timeline

2017-09-07 13:29 UTCPublished CVE record published
2026-06-17 01:04 UTCUpdated Record last modified

nexusphp project nexusphp DOWNGRADE

Affected: 1.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5

1. Check installed version

apt-cache policy nexusphp || rpm -q nexusphp || nexusphp --version

2. No fixed release: DOWNGRADE to a release before 1.5 (Debian / Ubuntu)

apt-cache madison nexusphp sudo apt install nexusphp=<VERSION_BEFORE_1.5> sudo apt-mark hold nexusphp

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list nexusphp sudo dnf downgrade nexusphp-<VERSION_BEFORE_1.5> sudo dnf versionlock add nexusphp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2017-12838?

nexusphp: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-12838 being exploited?

CVE-2017-12838 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-2017-12838 affect?

CVE-2017-12838 affects nexusphp. Severity is high (CVSS 8.8). Cross-site request forgery (CSRF) vulnerability in NexusPHP 1.5 allows remote attackers to hijack the authentication of users for requests that (1) send manas via a request to mybonus.php or (2) add administrators via unspecified vectors.

How urgent is CVE-2017-12838?

Priority 47/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2022-46887 CRITICAL 9.8 UPGRADE Multiple SQL injection vulnerabilities in NexusPHP before 1.7.33 allow remote attackers to execute arbitrary S
CVE-2020-24771 HIGH 7.5 DOWNGRADE Incorrect access control in NexusPHP 1.5.beta5.20120707 allows unauthorized attackers to access published cont

References

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