CVE-2017-17950: Cells Blog 3.5 has SQL Injection via the pub_readpost.php ptid parameter.

This month

HIGH 8.8DOWNGRADE

CVE-2017-17950 is a high-severity flaw (CVSS 8.8) affecting blog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cells Blog 3.5 has SQL Injection via the pub_readpost.php ptid parameter.

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	Low
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-89
Published	2017-12-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cells

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

Am I affected?

Timeline

2017-12-28 18:29 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

cells blog DOWNGRADE

Affected: 3.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.5 (Debian / Ubuntu)

apt-cache madison blog sudo apt install blog=<VERSION_BEFORE_3.5> sudo apt-mark hold blog

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

dnf --showduplicates list blog sudo dnf downgrade blog-<VERSION_BEFORE_3.5> sudo dnf versionlock add blog

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-2017-17950?

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

Is CVE-2017-17950 being exploited?

CVE-2017-17950 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-2017-17950 affect?

CVE-2017-17950 affects blog. Severity is high (CVSS 8.8). Cells Blog 3.5 has SQL Injection via the pub_readpost.php ptid parameter.

How urgent is CVE-2017-17950?

Priority 51/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2023-43381 HIGH 7.5 DOWNGRADE SQL Injection vulnerability in Tianchoy Blog v.1.8.8 allows a remote attacker to obtain sensitive information
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CVE-2021-36748 HIGH 7.5 UPGRADE A SQL Injection issue in the list controller of the Prestahome Blog (aka ph_simpleblog) module before 1.7.8 fo
CVE-2017-17949 MEDIUM 6.1 DOWNGRADE Cells Blog 3.5 has XSS via the pub_readpost.php fmid parameter.

References

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