CVE-2026-47851: Analyzing a PDF with a deeply nested or cyclic table of contents can cause a StackOverflowError in the ingesti

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HIGH 7.5REMOTEUPGRADE

CVE-2026-47851 is a high-severity flaw (CVSS 7.5) affecting spring ai. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Analyzing a PDF with a deeply nested or cyclic table of contents can cause a StackOverflowError in the ingestion thread. Spring AI 2.0.0 Spring AI 1.1.0 - 1.1.8 Spring AI 1.0.0 - 1.0.9

Why this priority

High severity
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 60%)
CISA exploited list	No
Weakness	CWE-674
Published	2026-08-27
Last modified	2026-09-04

Publisher (CNA): VMware · Vendor: vmware

Last updated 2026-09-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-27 01:17 UTCPublished CVE record published
2026-09-04 20:08 UTCUpdated Record last modified

vmware spring ai UPGRADE

Affected: >= 1.0.0 and < 1.0.10 · >= 1.1.0 and < 1.1.9 · >= 2.0.0 and < 2.0.0.1

Fixed in: 1.0.10, 1.1.9, 2.0.0.1

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy spring-ai || rpm -q spring-ai || spring-ai --version

2. UPGRADE to 1.0.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade spring-ai

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spring-ai

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 1.0.0 (Debian / Ubuntu)

apt-cache madison spring-ai sudo apt install spring-ai=<VERSION_BEFORE_1.0.0> sudo apt-mark hold spring-ai

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

dnf --showduplicates list spring-ai sudo dnf downgrade spring-ai-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add spring-ai

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.

Advisories and coverage

Official advisories

Spring Security Advisories: cve-2026-47851 - HIGH - Unbounded recursion over attacker-controlled PDF outline tree in Spring AI PDF Document Reader 2026-08-20

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-2026-47851?

spring ai: upgrade to 1.0.10, 1.1.9, 2.0.0.1. Exact commands for each OS are on this page.

Is CVE-2026-47851 being exploited?

CVE-2026-47851 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-2026-47851 affect?

CVE-2026-47851 affects spring ai. Severity is high (CVSS 7.5). Analyzing a PDF with a deeply nested or cyclic table of contents can cause a StackOverflowError in the ingestion thread. Spring AI 2.0.0 Spring AI 1.1.0 - 1.1.8 Spring AI 1.0.0 - 1.0.9

How urgent is CVE-2026-47851?

Priority 41/100. High severity; Remotely exploitable, no login, no user action

Software pages

VMware vulnerabilities

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References

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