CVE-2026-26745: OpenSourcePOS 3.4.1 has a second order SQL Injection vulnerability in the handling of the currency_symbol conf

Routine

MEDIUM 5.3DOWNGRADE

CVE-2026-26745 is a medium-severity flaw (CVSS 5.3) affecting open source point of sale. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenSourcePOS 3.4.1 has a second order SQL Injection vulnerability in the handling of the currency_symbol configuration field. Although the input is initially stored without immediate execution, it is later concatenated into a dynamically constructed SQL query without proper sanitization or parameter binding. This allows an attacker with access to modify the currency_symbol value to inject arbitrary SQL expressions, which are executed when the af

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-89
Published	2026-02-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opensourcepos

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

Am I affected?

Timeline

2026-02-20 17:25 UTCPublished CVE record published
2026-06-17 10:26 UTCUpdated Record last modified

opensourcepos open source point of sale DOWNGRADE

Affected: 3.4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4.1

1. Check installed version

apt-cache policy open-source-point-of-sale || rpm -q open-source-point-of-sale || open-source-point-of-sale --version

2. No fixed release: DOWNGRADE to a release before 3.4.1 (Debian / Ubuntu)

apt-cache madison open-source-point-of-sale sudo apt install open-source-point-of-sale=<VERSION_BEFORE_3.4.1> sudo apt-mark hold open-source-point-of-sale

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

dnf --showduplicates list open-source-point-of-sale sudo dnf downgrade open-source-point-of-sale-<VERSION_BEFORE_3.4.1> sudo dnf versionlock add open-source-point-of-sale

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-2026-26745?

open source point of sale: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-26745 being exploited?

CVE-2026-26745 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-2026-26745 affect?

CVE-2026-26745 affects open source point of sale. Severity is medium (CVSS 5.3). OpenSourcePOS 3.4.1 has a second order SQL Injection vulnerability in the handling of the currency_symbol configuration field. Although the input is initially stored without immediate execution, it is later concatenated into a dynamically c

How urgent is CVE-2026-26745?

Priority 31/100. Public exploit reference

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References

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