Bug 2463329 (CVE-2026-40977)

Summary: CVE-2026-40977 Spring Boot: Spring Boot: Local file corruption via PID file manipulation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: abrianik, aschwart, asoldano, aszczucz, ataylor, bbaranow, bmaxwell, boliveir, bstansbe, dbruscin, dhanak, dlofthou, drichtar, drosa, fmariani, ggrzybek, gmalinko, gtanzill, ibek, istudens, ivassile, iweiss, janstey, jbuscemi, jraez, jrokos, kaycoth, kvanderr, mnovotny, mosmerov, mposolda, msvehla, nwallace, parichar, pberan, pbizzarr, pdelbell, pesilva, pjindal, pmackay, rhel-process-autobot, rmartinc, rstancel, rstepani, sausingh, sdawley, smaestri, ssilvert, sthorger, tasato, tcunning, thjenkin, vdosoudi, vmuzikar, watson-tool-maintainers, yfang
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Spring Boot when an application is configured to use `ApplicationPidFileWriter`. A local attacker with write access to the PID file's location can exploit this vulnerability to corrupt one arbitrary file on the host each time the application is started. This can lead to data integrity issues or a denial of service (DoS) by rendering critical system files unusable.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-04-28 00:02:16 UTC
When an application is configured to use `ApplicationPidFileWriter`, a local attacker with write access to the PID file's location can corrupt one file on the host each time the application is started.

Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); PID file / symlink behavior (`ApplicationPidFileWriter`). Versions that are no longer supported are also affected per vendor advisory.