CVE-2026-26801: Server-Side Request Forgery (SSRF) vulnerability in pdfmake versions 0.3.0-beta.2 through 0.3.5 allows a remot

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HIGH 7.5REMOTEUPGRADE

CVE-2026-26801 is a high-severity flaw (CVSS 7.5) affecting pdfmake. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Server-Side Request Forgery (SSRF) vulnerability in pdfmake versions 0.3.0-beta.2 through 0.3.5 allows a remote attacker to obtain sensitive information via the src/URLResolver.js component. The fix was released in version 0.3.6 which introduces the setUrlAccessPolicy() method allowing server operators to define URL access rules. A warning is now logged when pdfmake is used server-side without a policy configured.

Why this priority

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

A fixed release or distro patch exists.

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 57%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-03-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pdfmake

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

Am I affected?

Timeline

2026-03-10 19:17 UTCPublished CVE record published
2026-06-17 10:26 UTCUpdated Record last modified

pdfmake pdfmake UPGRADE

Affected: >= 0.3.1 and <= 0.3.5 · 0.3.0 · 0.3.0 beta10 · 0.3.0 beta11 · 0.3.0 beta12 · 0.3.0 beta13 · 0.3.0 beta14 · 0.3.0 beta15

Fixed in: newer than 0.3.5

Safe to downgrade to: a release before 0.3.0

1. Check installed version

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

2. UPGRADE to newer than 0.3.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pdfmake

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pdfmake

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.3.0 (Debian / Ubuntu)

apt-cache madison pdfmake sudo apt install pdfmake=<VERSION_BEFORE_0.3.0> sudo apt-mark hold pdfmake

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pdfmake sudo dnf downgrade pdfmake-<VERSION_BEFORE_0.3.0> sudo dnf versionlock add pdfmake

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-2026-26801?

pdfmake: upgrade to newer than 0.3.5. Exact commands for each OS are on this page.

Is CVE-2026-26801 being exploited?

CVE-2026-26801 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-2026-26801 affect?

CVE-2026-26801 affects pdfmake. Severity is high (CVSS 7.5). Server-Side Request Forgery (SSRF) vulnerability in pdfmake versions 0.3.0-beta.2 through 0.3.5 allows a remote attacker to obtain sensitive information via the src/URLResolver.js component. The fix was released in version 0.3.6 which intro

How urgent is CVE-2026-26801?

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

Related CVEs

CVE-2025-11362 HIGH 7.5 DOWNGRADE Versions of the package pdfmake from 0.3.0-beta.1 and before 0.3.0-beta.17 are vulnerable to Allocation of Res

References

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