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VulnerabilityPublished Updated

CVE-2026-41851: Spring Framework · Unthrottled Resource Allocation

Affects Spring FrameworkSource CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium · fixed in 7.0.7.1 : update Spring Framework when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 32% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 7.0.7.1, 6.2.18.1, 6.1.28 +1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Spring Framework to 7.0.7.1, 6.2.18.1, 6.1.28 or 5.3.49.

Affected software

ProductAffectedFixed in
SpringSpring FrameworkAffected
  • >=7.0.0 <7.0.7.1
Fixed in
  • 7.0.7.1
SpringSpring FrameworkAffected
  • >=6.2.0 <6.2.18.1
Fixed in
  • 6.2.18.1
SpringSpring FrameworkAffected
  • >=6.1.0 <6.1.28
Fixed in
  • 6.1.28
SpringSpring FrameworkAffected
  • >=5.3.0 <5.3.49
Fixed in
  • 5.3.49

AI-suggested

If you cannot patch yet, avoid accepting or evaluating untrusted user-supplied SpEL expressions to mitigate risk.

Description

Applications which accept user-supplied Spring Expression Language (SpEL) expressions may be vulnerable to a Denial of Service (DoS) attack if the evaluation of a SpEL expression triggers unbounded cache growth. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

References

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