CVE-2025-63891: Information Disclosure in web-accessible backup file in SourceCodester Simple Online Book Store System allows

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2025-63891 is a high-severity flaw (CVSS 7.5) affecting simple online book store system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Information Disclosure in web-accessible backup file in SourceCodester Simple Online Book Store System allows a remote unauthenticated attacker to disclose full database contents (including schema and credential hashes) via an unauthenticated HTTP GET request to /obs/database/obs_db.sql.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-200
Published	2025-11-14
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: oretnom23

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-14 21:15 UTCPublished CVE record published
2026-07-05 17:17 UTCUpdated Record last modified

oretnom23 simple online book store system DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy simple-online-book-store-system || rpm -q simple-online-book-store-system || simple-online-book-store-system --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison simple-online-book-store-system sudo apt install simple-online-book-store-system=<VERSION_BEFORE_1.0> sudo apt-mark hold simple-online-book-store-system

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

dnf --showduplicates list simple-online-book-store-system sudo dnf downgrade simple-online-book-store-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add simple-online-book-store-system

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-2025-63891?

simple online book store system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-63891 being exploited?

CVE-2025-63891 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-2025-63891 affect?

CVE-2025-63891 affects simple online book store system. Severity is high (CVSS 7.5). Information Disclosure in web-accessible backup file in SourceCodester Simple Online Book Store System allows a remote unauthenticated attacker to disclose full database contents (including schema and credential hashes) via an unauthenticat

How urgent is CVE-2025-63891?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-6951 MEDIUM 6.3 DOWNGRADE A vulnerability, which was classified as critical, was found in SourceCodester Simple Online Book Store System
CVE-2022-37796 MEDIUM 5.4 DOWNGRADE In Simple Online Book Store System 1.0 in /admin_book.php the Title, Author, and Description parameters are vu
CVE-2022-2771 MEDIUM 6.3 MITIGATE A vulnerability has been found in SourceCodester Simple Online Book Store System and classified as critical
CVE-2022-2770 MEDIUM 6.3 MITIGATE A vulnerability, which was classified as critical, was found in SourceCodester Simple Online Book Store System
CVE-2022-2748 LOW 3.5 MITIGATE A vulnerability was found in SourceCodester Simple Online Book Store System

References

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